A nutritionist claims that the mean tuna consumption by a person is 3.2 pounds per year. A sample of 50 people shows that the mean tuna consumption by a person is 3.1 pounds per year. Assume the population standard deviation is 1.04pounds. At α = 0.05, can you reject the claim?(a) Identify the null hypothesis and alternative hypothesis.A. Ho: μ>3.1Ha: μ≤3.1D. Ho: μ = 3.2Ha: μ#3.2B. Ho: μ>3.2Ha:μ≤3.2E. Ho: μ≤3.2H₂:μ>3.2OC. Ho: μ≤3.1Ha:μ>3.1OF. Ho: μ#3.1H₂: μ = 3.1

Given: A nutritionist claims that the mean tuna consumption by a person is 3.2 pounds per year. A…

Answered: A nutritionist claims that the mean…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample of 134 adult males, the pulse rates have a standard deviation of 11.2bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
Cynthia is president of an international chemical distribution company, Cchem. Weekly gross sales for Cchem has a mean of $1 million and standard deviation of $0.2 million; the distribution of sales is highly right-skewed. One week’s sales are independent of the sales in any other week. Use this information to answer questions 5 to 6 below. What is the probability that sales for the week of October 5, 2009 will be more than $1.25 million? In order for Cynthia to receive a bonus, Cchem’s annual sales must exceed $53 million. What is the probability that Cynthia will receive a bonus for the fiscal year starting in 2010? Assume there are 52 weeks in a year.
A nutritionist claims that the mean tuna consumption by a person is 3.1 pounds per year. A sample of 50 people shows that the mean tuna consumption by a person is 2.9 pounds per year. Assume the population standard deviation is 1.08 pounds. At a= 0.09, can you reject the claim? (a) Identify the null hypothesis and alternative hypothesis. OB. Ho Ha p> 2.9 OC. H, p#2.9 Ha H=2.9 µ32.9 us2.9 A. Ho H= 3.1 Ha H#3.1 OD. H, H>3.1 Ha µ53.1 OE H, s3.1 Ha p>31 OF Ho p> 2.9 Hps2.9 s. every ti s hir wing. es (b) Identify the standardized test statistic. Home z= - 1.31 (Round to two decimal places as needed.) (c) Find the P-value. ments (Round to three decimal places as needed.) book t: 0 ter Contents Clear all Check answer ltimedia Library View an example Get more help- Help me solve this zudy Plan 11:17. OK Innls for Success 68F ^@口a a 12/4/2 99+ A6 A Type here to search 10/05/17 97 PrtSc Insert Delete F10 F11 F12 F6 F7 FB F9 F1 F2 F3 F4 F5 Backspace Num Lock
You want to buy a washing machine, and a salesperson tells you that the mean repair costs for Model A and Model B are equal. You research the repair costs. The mean repair cost of 21 Model A washing machines is $215. Assume the population standard deviation is $19. The mean repair cost of 22 Model B washing machines is $221. Assume the population standard deviation is $20. At α=0.01, can you reject the salesperson's claim? Assume the samples are random and independent, and the populations are normally distributed.
The scores on a mathematics exam have a mean of 70 and a standard deviation of 6. Find the x-value that corresponds to the z-score 5.19. O 64.8 O 121.9 O 18.1 O 101.1
Claim: The standard deviation of pulse rates of adult males is more than 11 bpm. For a random sample of 170 adult males, the pulse rates have a standard deviation of 12.2 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
Claim: The standard deviation of pulse rates of adult males is more than 12 bpm. For a random sample of 172 adult males, the pulse rates have a standard deviation of 11.5 bpm. Find the value of the test statistic?
A recent personalized information sheet from your wireless phone carrier claims that the mean duration of all your phone calls was μ=3.1 minutes with a standard deviation of σ=2.4 minutes. From a random sample of n=50 calls, your parents computed a sample mean of x=4.1 minutes and a sample standard deviation of s=3.2 minutes. Complete parts a through e below. a. Sketch the population distribution for the duration of your phone calls. What are its mean and standard deviation? b. What are the mean and standard deviation of the data distribution? c. Find the mean and standard deviation of the sampling distribution of the sample mean. d. Is the sample mean of 4.1 minutes unusually high? Find its z-score and comment. e. Your parents told you that they will kick you off the plan when they find a sample mean larger than 4.2 minutes. How likely is this to happen? P(x>4.2 minutes)= ?
Claim: The standard deviation of pulse rates of adult males is less than 10 bpm. For a random sample of 173 adult males, the pulse rates have a standard deviation of 8.9 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed)
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.9 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 24 samples is 8.1 ppm with a variance of 0.25. Does the data support the claim at the 0.1 level? Assume the population distribution is approximately normal. Step 5 of 5: Make the decision to reject or fail to reject the null hypothesis.
Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample of 157 adult males, the pulse rates have a standard deviation of 10.9 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
Claim: The standard deviation of pulse rates of adult males is less than 12 bpm. For a random sample of 160 adult males, the pulse rates have a standard deviation of 10.7 bpm. Find the value of the test statistic. The value of the test statistic is :

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