The mean number of hours of sleep for adults in the population of the U.S. is 6.8 with a standard deviation of 0.86. A researcher believes that the mean of hours thatcollege students get per night is less than adults in the population. Based on data collected for the researcher, the mean number of hours of sleep in a sample of 100students is 7 hours. Assume a-5%. What graph would you choose to test this hypothesis?O a.O b.O C.Reject Hoa-Z-criticalReject HoCL/2-t-criticalReject Hoaww-Z-criticalZ-statisticDo Not Reject Ho0Do Not Reject Ho1t-statistic 0Z-statisticADo Not Reject Ho0Reject Hoa/2Manpostt-critical e.d.Z-criticalZ-statisticaADo Not Reject Ho0 Z-statisticReject HoJADo Not Reject Howwwww-t-criticalt-statistic0Reject HoaZ-critical

That is, there is no evidence to conclude that the mean of hours that college students get per night…

Answered: The mean number of hours of sleep for…

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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Similar questions

Consider the following sample: 1, 4, 7, 2, 6. How does the standard deviation change when the 7 is replaced with a 12? Answer intuitively first, and then check your answers numerically.
Which of the following is not a measure of central tendency?A. the medianB. the modeC. the meanD. the rangeE. all of the above show measure of central tendency
4. The lowest and the highest data value of a data set are 12 and 28 respectively, then the approximate standard deviation is:
Consider the data from the Anthropology 105 class. The mean for women is 64.33 in and the standard deviation is 2.64 in. The average height of men in the US is approximately 5ft 10in. What proportion of women represented here are shorter than the average man?
John finds that there is a scholarship available to all persons scoring in the top 5 % on the ACT test. If the mean score on the ACT is 21 with a standard deviation of 4.7, what score does he need in order to qualify for the scholarship?
. Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trout caught in Pyramid Lake is ? = 19 inches. However, the Creel Survey reported that of a random sample of 49 fish caught, themean length was ?̅= 18.5 inches, with estimated standard deviation ? = 3.2 inches. Do these data indicate that the average length of a trout caught in Pyramid Lake is less than ? = 19 inches? Use ? = 0.05.a. Do we use a Normal or a Student’s t- distribution? Explain. How many degrees of freedom do we use?b. What are the hypotheses?
please answer 4 and 5
.
Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a standard deviation of $250. Approximately what percentage of one-bedroom apartments in the city cost between $750 and $1,000?
A researcher has collected the following sample data. The mean of the sample is 5. 3 5 12 3 2 The 75th percentile is 5 8.5 9 10
Please review Section 9.2. A marketing researcher wants to estimate the mean amount spent per year ($) on a web site by membership member shoppers. Suppose a random sample of 100 membership member shoppers who recently made a purchase on the web site yielded a mean amount spent of $60 and a standard deviation of $56. Use technology to solve and include files and/or screen shots. Is there evidence that the population mean amount spent per year on the web site by membership member shoppers is different from $52? a =0.05 H:µ= 52 H : µ # 52 Identify the critical value(s): (Round to two decimal places as needed.) Determine the test statistic: (Round to two decimal places as needed.) State the conclusion:
For scenarios of statistical studies are given below. Decide which study uses a population parameter. And estimated 15% of Americans don't use the Internet. Lakeside family dentistry reported that six of the 15 patients who came in for regular cleaning one day had at least one cavity.

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