Fowle Marketing Research, Inc., bases charges to a client on the assumption that telephone surveys can be completed in a mean time of 15 minutes or less. If a longer mean survey time isnecessary, a premium rate is charged. A sample of 35 surveys from a particular client provided the survey times shown in the file named Fowle. Based upon past studies, the population standarddeviation is assumed known with a = 4 minutes. Is the premium rate justified for this client?1716121113esc11 12 23 20123 22 18 23 25 1412 20 18 12 19 1120 21 11 1819 16 10 22Ho: μ = 15H₂: μ = 15A(a) Formulate the null and alternative hypotheses for this application.Ho: μ > 15Ha: ≤ 15Ηγ: μ < 15Hg: μ ε 15Ηγ: με 15H₂: μ > 15QΗγ: μ 2 15Hg:μ < 15(b) Compute the value of the test statistic. (Round your answer to two decimal places.)23 15(c) What is the p-value? (Round your answer to four decimal places.)p-value =O214 13100WS18723#3EaD$4RFmdo Lo%5♫T-MAmGMacBook Pro6Y&7HDOPWU00*8J1KMcricut11e7+delete

Answered: Fowle Marketing Research, Inc., bases…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Considering salary of employee's in a company, the mean salary of managers is $102,000 per year. Is this number a statistic or parameter?
A company has rolled out a new process for sales people to use. They were able to go back into the company records and pull all sales data from before the roll out. Each sales person when they closed a sale had an average contract of $108 with a standard deviation of $12. During the first month after the roll out, a sample of sales showed the average contract was $116. Which statistical test could be used to see if this was a significant increase in contract size?
You are applying for a job at two companies. Company A offers starting salaries with u = $33,000 and o = $1,000. Company B offers starting salaries with u = $33,000 and o = $3,000. From which company are you more likely to get an offer of $35,000 or more? Choose the correct answer below. O A. Company A, because data values that lie more than two standard deviations from the mean are considered unusual. O B. No difference, because data values that lie more than three standard deviations from the mean are considered very unusual. O C. Company B, because data values that lie within one standard deviation from the mean are not considered unusual.
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Airline Fares. The mean airfare for flights departing from Buffalo Niagara International Airport during the first three months of 2017 was $320.51. Assume the standard deviation for this population of fares is known to be $80. Suppose a random sample of 60 flights departing from Buffalo Niagara International Airport during the first three months of 2018 is taken. If the mean and standard deviation of the population of airfares for flights departing from Buffalo Niagara International Airport didn’t changed between the first three months of 2017 and the first three months of 2018, what is the probability the sample mean will be within $20 of the population mean cost per flight? What is the probability the sample mean will be within $10 of the population mean cost per flight?
A polling organization reported data from a survey of 2000 randomly selected Canadians who carry debit cards. Participants in this survey were asked what they considered the minimum purchase amount for which it would be acceptable to use a debit card. Suppose that the sample mean and standard deviation were $9.14 and $7.70, respectively. (These values are consistent with a histogram of the sample data that appears in the report.)Do these data provide convincing evidence that the mean minimum purchase amount for which Canadians consider the use of a debit card to be appropriate is less than $10? Carry out a hypothesis test with a significance level of 0.01. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State your conclusion. Reject H0. We do not have convincing evidence that the mean minimum purchase amount for which Canadians consider it…
Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One way to help make this decision is to look at the mean incomes of these two groups. Suppose that 15 people with bachelor’s degrees in education were surveyed. Their mean annual salary was $⁢31,500 with a standard deviation of $⁢7900. Seventeen people with doctoral degrees in education were found to have a mean annual salary of $⁢47,500 with a standard deviation of $⁢6900. Assume that the population variances are not the same. Construct a 99% confidence interval to estimate the true difference between the mean salaries for people with doctoral degrees and undergraduate degrees in education. Let Population 1 be the salaries for people with doctoral degrees and Population 2 be the salaries for people with undergraduate degrees. Round the endpoints of the interval to the nearest whole number, if necessary.
Answer part c and d frq styled
What is the relative frequency? Give your answer to two decimal places.
The cities with the highest life expectancy are Nowhereville: 84.6 years; Somewhereopolis: 79.8 years; Kinch City: 79.8 years; Tortuga: 84.6 years; Euler Town: 78.5 years; Godelville: 84.6 years; Sirap: 90.1 years. Find the mean, the median, and the mode. ..... Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The mean life expectancy is years. (Round to the nearest tenth as needed.) B. The mean does not exist. Find the median. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The median life expectancy is years. (Round to the nearest tenth as needed.) B. The median does not exist. Find the mode. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode life expectancy is years. (Round to the nearest tenth as needed.) O B. The mode does not exist.
According to Chebyshev's Rule, at least what percent of observations must be within 2.5 standard deviations from the mean? [a]%

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