X is a normally distributed random variable with unknown µ and anunknown variance, o. X and s are the unbiased, sample mean andsample variance estimates of u and o obtained from a small sample sizebelow 25 (n<25). The 95% C.I. is calculated as:Q9.s2D. µ ± tn-1.D. µt tn-1s2A. X± 1.96B. μ+ 1.96,C. X±tn-1,nnnО А. АВ. ВОС. СO D. D

Given that.: Sample size (n) = 25 And x follows normal distribution. At 95 % of confidence…

Answered: unknown variance, o. X and s° are the…

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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1. Calculate the mean speed in miles per hour attained between zero (0) and (7) for this distribution. A. 56.73 B. 75.63 C. 73.56 D. 76.05 2. Calculate the variance for the distribution given in figure 1. A. 429.84 B. 492.98 C. 924.86 D. 942.99 3. Calculate the standard deviation and the co-efficient of variation respectively for the distribution given in figure 1. A. 73.20, 28.20 B. 20.73, 0.28 C. 27.30, 20.28 D. 0.28, 0.21
Match the definition in column X with the correct term in column Y.
A sample of 100 scores has a mean of 58, a variance of 160, and an estimated standard error of 4. Which of these values is guaranteed to increase if the sample size is decreased to 10? a. none of these is likely to be changed very much by decreasing n. b. the value of the variance c. the value of the mean d. the value of the standard error
Suppose data is collected to predict y from x. If the size of Sample ✓ Calculate the p-value if the test statistic is t = -1.38
Teacher Tutorial Rate(in thousand)x A 8 B 12 16 20 C D E 24 F 28 SHOW YOUR COMPUTATION: (handwritten) 1. Solve for the mean of the population u. 2. Solve for the mean of the sampling distribution of the sample means lg- 3. Compare u and ug. 4. Solve for the variance (o2) and the standard deviation (6) of the population. 5. Solve the variance (os) and the standard deviation (oz) of the sampling distribution of the sample means µg. 6. Compare o and og.
B. Samples of size n were randomly selected from the population. The mean and the standard deviations of the population are given below. In each case, find the mean and the variance of the sampling distribution of the means. μ = 3; o = 1.3 1. n = 2; 2. n = 5; μ = 2.75; o = 3.5 3. n = 8; μ = 32; o = 7.9 n = 6; μ = 4.3; o = 1.9 4. 5. n = 2; μ = 1.5; o = 2
Compute for the mean (??̅) and standard deviation (??̅) of the sampling distribution of the sample means and compare these to the mean and standard deviation of the population.
1. Assuming a normal population distribution of X with population mean = 40 and population variance = 100, what is the mean of the sampling distribution of the mean and standard error of the mean using a sample size of 25? Mean = __________ Standard Error of the Mean = __________
Determine the standard error. Complete solution
A. 2.1
Time left 0:48:02 Which one of the following choices describes a problem for which an analysis of variance would be appropriate? CA. Analyzing the relationship between high school GPA and college GPA C B. Analyzing the relationship between gender and opinion about capital punishment (favor or oppose). OC. Comparing the mean birth weights of newborn babies for three different hospitals. C D. Comparing the proportion of successes for three different treatments of anxiety. Each treatment is tried on 100 patients CE. None of these Next page US ACTIVITY VA(3) Jump to... MacBook Air
Listed below are time intervals (min) between eruptions of a geyser. The "recent" times are within the past few years, and the "past" times are from 1995. Does it appear that the variation of the times between eruptions has changed? Use a 0.05 significance level. Assume that the two populations are normally distributed. E Click the icon to view the sample data. - X Sample data Identify the test statistic. The test statistic is (Round to two decimal places as needed.) Identify the P-value Recent 79 95 89 75 55 97 66 90 66 86 81 87 Past 92 85 94 99 68 82 89 98 84 98 92 91 The P-value is (Round to three decimal places as needed.) Print Done What is the conclusion for this hypothesis test? O A. Reject Ho. There is sufficient evidence to support the claim that the variation of the times between eruptions has changed. O B. Reject Ho. There is insufficient evidence to support the claim that the variation of the times between eruptions has changed. OC. Fail to reject Hg. There is sufficient…

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unknown variance, o. X and s° are the unbiased, sample mean and sample variance estimates of u and o obtained from a small sample size below 25 (n<25). The 95% C.I. is calculated as: : 196 B. ut 1.96 c. Kt4 D.ut A. X±1.96. B. μ+ 1.96. D. μ4 t-1. O A. A В. В С. С D. D O O