Math

StatisticsQ&A LibraryA consensus forecast is the average of a large number of individual analysts' forecasts. Suppose the individual forecasts for a particular interest rate are normally distributed with a mean of 6 percent and a standard deviation of 1.4 percent. A single analyst is randomly selected. Find the probability that his/her forecast is (a) At least 3.3 percent. (Round the z value to 2 decimal places. Round your answer to 4 decimal places.)Start your trial now! First week only $4.99!*arrow_forward*

Question

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: In the past, 74% of the tourists who visited Chattanooga went to see Rock City. The management of Ro...

A: Click to see the answer

Q: Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval...

A: Click to see the answer

Q: The wait time at a drive-through fast-food restaurant has a standard deviation of 18.0 seconds. Use ...

A: Given that, The wait time at a drive-through fast-food restaurant has a standard deviation of 18.0 s...

Q: If a hypothesis test leads to the rejection of the null hypothesis, a have been committed. Type I er...

A: Given that the hypothesis test leads to the rejection of the null hypothesis.

Q: eBook How large a sample should be selected to provide a 95% confidence interval with a margin of er...

A: 1] standard deviation =σ=30 2] margin of error=E=2 3] we use 95% confidence interval

Q: Statistics Question

A: Solution: State the hypotheses. Null hypothesis: H0: Home/visitor wins are independent. Alternative ...

Q: Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Co...

A: Given,

Q: Help me fast so that I will give good rating.

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the exac...

Q: A committee is interested in the mean amount of time individuals waste at the courthouse waiting to ...

A: 95% confidence interval for the population mean time wasted is found as (7.12 , 8.88). we are intere...

Q: Please show work thank you The p-value of a test of H0: μ1≤μ2 versus Ha: μ1>μ2 is 0.04711. D...

A: Since, the p-value depends on nature of alternate hypothesis, so we will calculate p-value according...

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on ave...

A: Given Information: On average, the reduction in systolic blood pressure is 45.4 for a sample of size...

Q: A medical center, with 75,000 charts on file, has established that a chart should be located within ...

A: Total number of chart requests in a month = 675 Number of charts located within the quality standard...

Q: A political analyst believes that a senator's recent decision to support a bill resulted in a drop o...

A: Given: n=8 The significance level is taken as 0.05.

Q: The test statistic in a right-tailed test is z=-0.73. Determine the P-value and decide whether, a...

A: The test statistic is -0.73.

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support...

A: Solution: From the given information, confidence level is 0.95 and E=0.025.

Q: Let us modify Computer Exercise C4 in Chapter 8 by using voting outcomes in 1990 for incumbentswho w...

A: i) From the given regression equation, the coefficient of voteA88 is 0.067. Interpretation: If the v...

Q: Sketch the area under the stndard normal curve over the indicated interval and find the specified ar...

A: Solution: The probability under the standard normal curve to the left of z < 0.41 is: P(Z<0.41...

Q: UPS currently believes that it achieves a 96 % on-time performance for its customers. A random sampl...

A: Click to see the answer

Q: Show work please In a sample of 390 people attending a concert, 60% stated that the venue was a good...

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will an...

Q: Marta Human Resource manager has asserted that Marta workers work, on average, no more than three ho...

A: Click to see the answer

Q: What is the answer?

A: a. Given that, n=700; p^=0.20 Confidence level is 90% Critical value: The two tailed z critical valu...

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the ind...

A: Mean = 26 Standard deviation = 3.4

Q: The following is the number of hours of sleep obtained by eight college freshmen. Use the data to f...

A: The data set is: 7.5 8 6.5 24 8.5 6.5 7 7.5

Q: The mean SAT score in mathematics, μ, is 564. The standard deviation of these scores is 50. A specia...

A: Given information- Sample size, n = 70 Population mean, µ = 564 Sample mean, x-bar = 579 Population ...

Q: 3) 15 % of the area under the normal curve is between p - 20 and p + 20. ( Round to four decimal pla...

A: Click to see the answer

Q: Louis Armstrong, salesman for the Dillard Paper Company, has five accounts to visit per day. It is s...

A: Given: The number of sales per day and frequency given as follows Number of sales per day Frequen...

Q: Please solve for all parts

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case yo...

Q: Thank you in Advance for quick response. Best,

A: Valid pdf property is applicable . ∫-∞∞f(x) dx = 1

Q: Please solve to the simplest form: 42 divided by the square root of 25. Sorry I don't know how to u...

A: From the provided information, 42 divided by square root of 25.

Q: find the correlation coefficient r. x y 7 15 10 16 15 25 18 32

A: Calculation: From the table,

Q: An electronics manufacturing process has a scheduled mean completion time of 75 minutes. It is claim...

A: Click to see the answer

Q: The medical records of infants delivered at the Kaiser Memorial Hospital show that the infants' leng...

A: Click to see the answer

Q: For each problem, write which test you used in your calculator, draw the graph, calculate p-value, a...

A: The above test is two sample z test as population standard deviation is known let us consider , x:...

Q: A set of n = 25 pairs of scores (X and Y values) produces a regression equation Y = 3X – 2. Findthe ...

A: Given that : A set of n = 25 pairs of scores ( X and Y values ) produces a regression equation Y = ...

Q: In examining the invoices issued by a company, an auditor finds that the dollar amounts of invoices ...

A: Click to see the answer

Q: Please show formulas thank tou and on TI-84 calculator A test of H0:ρ=0H0:ρ=0 versus Ha:ρ≠0Ha:ρ≠0 ...

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will an...

Q: The city of Raleigh has 7,200 registered voters. There are two candidates for city council in an upc...

A: In this context, it is known that the number of registered voters of city of Raleigh. Total no. of r...

Q: Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights in p...

A: Null hypothesis: H0: µ1=µ2. That is, two means are equal. Alternative hypothesis: H1: µ1≠µ2....

Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite pie...

A: Given Information : A magazine provided results from a poll of 1000 adults who were asked to identi...

Q: Two crossing, non-parallel lines in a graph pertaining to separate factors (i.e., A & B) in a tw...

A: Note: Hey, since multiple questions are posted, we will answer first question for you. If you want a...

Q: One particular professional association of investors conducts a weekly survey of its members to meas...

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case yo...

Q: A pizza place has two phones. On each phone the waiting time until the first call is exponentially d...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a ti...

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey...

A: Q1)Mean = 190000Standard deviation = 34000 The distribution of X is N(190000,34000) Q2)The mean is...

Q: In a sporting event, the scoring area (shown here) consists of four concentric circles on the ice wi...

A: Click to see the answer

Q: he table below summarizes data from a survey of a sample of women. Using a 0.05 significance level, ...

A: From the given information, Man Woman Total Women who agree 592 247 839 Women who disagree ...

Q: Need help with this!

A: a) Excel Procedure: Enter X and Y in Excel>Data>Data Analysis> ‘Regression’>Select Y und...

Q: Let x be a random variable that represents the percentage of successful free throws a professional b...

A: (d) Obtain the value of b(slope) The value of slope is obtained below as follows: From the informati...