A)Find the sample standard deviationB)construct a 95% confidence interval The state test scores for 12 randomly selected high school seniorsare shown on the right. Complete parts (a) through (c) below.Assume the population is normally distributed.142369772262012247307411443988839549946

The provided information is as follows:The total number of state test scores for randomly selected…

Answered: The state test scores for 12 randomly…

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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College tuition: A simple random sample of 40 colleges and universities in New York State has a mean tuition of $30,503 with a standard deviation of $6,372. Construct an 80% confidence interval for the mean tuition for all colleges and universities in New York State. An 80% confidence interval for the mean tuition for all colleges and universities is
Construct the confidence interval for the population mean u .c=.98, x=6.4, o=0.7, n = 40
Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.When 316 third graders are randomly selected and surveyed, it is found that 112 own a cell phone. Find a 99% confidence interval for the true proportion of all third graders who own a cell phone.
QUESTION 3 A wholesaler must decide how many computers to purchase before they know how many they will be able to sell to local retailers. The wholesaler purchases the computers for S300 each and sells them to retailers for $350 each. If the wholesaler is not able to sell them to a retailer then the wholesaler can return them to the manufacturer (for a refund of the S300 cost), but the wholesaler must pay $40 per computer that it returns to the manufacturer (in shipping, handling, and insurance costs). The following probability distribution describes the number of computers the wholesaler may possibly sell to local retailers: there is a 21% chance that they will sell 900 computers, a 56% chance that they will sell 1200 computers; otherwise, they will sell 1500 computers. What is the expected number of computers the wholesaler will sell? (please round your answer to 1 decimal place)
Among various ethnic groups, the population standard deviation of heights is unknown. We wish to construct a 95% confidence interval for the average height of men from a certain region. Forty-eight men from this region are surveyed. The sample mean is 71 inches and the sample standard deviation is 3 inches. A.) Construct a 95% confidence interval for the population mean height of men from this region. B.) Provide an interpretation for your interval.
Milan
Calculate the 95% confidence interval and record the upper and lower limits with the following information. Interpret confidence interval Mean=15.83 Standard deviation= 7.83 Sample size= 10
Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence interval for a sample size of 201 with 85 percent success rate.
A. Find the sample meanB. Find the sample standard deviation C. Construct a 98% confidence interval for the population mean(please show what numbers you are putting into the formula for part b)
Find the critical value for a 98% confidence interval. Then calculate the interval.
7. use the given confidence interval to find the margin of error and the sample proportion. a. (0.719,0.745) b. (0.753,0.777)
Calculate the 95% confidence interval and record the lower and upper limits from the following: Mean= 24.74 Standard Deviation= 14.37 Sample Size= 8

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The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed. 1423 697 722 620 1224 730 741 1443 988 839 549 946 0