A random sample of n = 9 values taken from a normally distributed population with a population variance of 25 resulted in the sample values shown below. Use the sample values to construct a 90%confidence interval estimate for the population mean.46 61 50544754444452The 90% confidence interval is(Round to two decimal places as needed. Use ascending order.)

The below is the formula of confidence interval for the population mean

Answered: A random sample of n = 9 values taken…

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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The drop out rate of female students from computer science programs in their first year is much higher compared to males. There are many initiatives that aim to help lower the rate of drop out for females which is currently 0.30. If 310 female students enrolled in the computer science program this year, what is the probability that less than 80 will actually drop out? O A. 0.579 O B. 0.054 O C. 0.421 O D. 0.946 Reset Selection
im trying to use excel, im lost. help a. Determine the 95% confidence interval for the mean predicted when x= 7 b. Determine the 95% prediction interval for an individual predicted when x= 7. x y 5 13 3 15 6 7 3 12 4 13 4 11 6 9 8 5
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
Given two independent random samples with the following results: n₂ = 8 x₂ = 124 $2 = 28 = 16 n₁ x₁ = 94 $1 = 16 Use this data to find the 90 % confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed. Copy Data Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval.
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For the data set below, calculate r, r2, and a 95 percent confidence interval in r units. Then write a one- to two sentence conclusion statement that includes whether the null hypothesis was rejected or not and whether there is a strong /weak/no relationship. Assume a two tailed hypothesis and α = .05. Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 X 1.05 1.15 1.30 2.00 1.75 1.00 Y 2 2 3 4 5 2
PLEASE ANSWER ALL THE PARTS OF THE QUESTION ( THIS IS NOT A GRADED ASSIGNMENT)
The data set below represents the weights in grams of 10 randomly selected adult male fox squirrels from a forest. Assume the weights are normally distributed. 821 857 782 930 720 821 794 876 810 840 Find the sample mean and sample standard deviation Construct a 90% confidence interval for the population mean. Interpret the results from b.
In order to compare the means of two populations, independent random samples of 410 observations are selected from each population, with the results found in the table to the right. Complete parts a through e below. BOCO Sample 1 x₁ = 5,260 $₁=155 Sample 2 X₂=5,232 $2=200 a. Use a 95% confidence interval to estimate the difference between the population means (H₁-H2)- Interpret the confidence interval The confidence interval is (0) (Round to one decimal place as needed.)
Use the sample information. X = 40, 0 = 4, and n= 20 to calculate the following confidence intervals assuming the sample is from a normal population. A. 90% confidence from____to____ (Round 4 decimal places.) B. 95% confidence interval is from_____to_____ (Round 4 decimal places.) C. 99% confidence interval is from______to_____ (Round 4 decimal places.) D. Describe how the intervals change as you increase the confidence level. A. The interval gets narrower as the confidence level increases B. The interval gets wider as a confidence level decreases C. The interval gets wider as a confidence level increases D. The interval stays the same as the confidence level increases
A random sample of statistics students were asked to estimate the total number of hours they spend watching television in an average week. The responses are recorded in Table. Use this sample data to construct a 98% confidence interval for the mean number of hours statistics students will spend watching television in one week. Assume the population is normally distributed. (Give your answer to 3 decimal places if necessary.) 20 13 1 10 20 0 10 13 16 10 1 17 18 3 9 (?,?)
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