Q9. The following C.I.s were obtained for mean of the same population:[16, 23] and [14.9, 24.1].Identify the correct row in the Table below:No. ofSampleLevel ofSamplessizeconfidenceА.2SamesameВ.1DifferentsameС.1SamedifferentD.2SamedifferentΟ Α. ΑОВ. ВС. СO D. D

We have given that Confidence interval (16,23) and (14.9, 24.1)

Answered: Q9. The following C.I.s were obtained…

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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7. Bob draws a simple random sample from an original population. The sample size is n = 51, the sample 78, and the sample standard deviation turns out to be s = mean turns out to be x 14. Find the 95% confidence interval for the population mean µ. А. (74.062, 81.938) В. (74.062, 83.948) С. (74.062, 85.958) D. (74.062, 87.968)
Answer both parts of number 2
12.A sample of n = 16 scores has a mean of M = 65 and an estimated standard error of 2 points. What is the sample variance? s2 = 64 c. s2 = 16 а. b. s2 = 36 d.s? = 4
If (50, 70) is a 99% confidence interval for the population mean u, then the point estimate for u is а. 50 b. 60. О с. 20 O d. 70 О е.10.
A sample with size n=4 is drawn from the set 5,6,8,10,12 and 20.Determine the number of possible samples with size 4, Identify the distribution of the sample means, and compute the mean, standard error and variance of the sample means.
46. For each scenario listed on the left, determine whether the scenario represents an (a)Independent or (b)Dependent Samples situation by placing the appropriate letter in the box provided. Comparing pain levels before and after treatment with magnetic therapy Comparing the number of speeding tickets received by men to the number received by women Comparing pre-test scores before training to post-test scores Comparing pain levels of a group receiving a placebo to a group receiving a medicine Independent Samples Dependent Samples
Find the minimum sample size needed to estimate the true mean with margin of error of 9 and at confidence of 90%. Assume the population range is 102. Select one: а. 49 O b. 54 С. 348 O d. 22 е. 21 O f. 19
answer as soon as possible
Find the standardized test statistic, z to test the claim that p, = p2. The sample statistics listed below are from independent samples. n1 = 50, x1 = 35, and n2 = 60, x2 = 40 ... О А. 1.328 В. 2.361 С. О.374 O D. 0.982
7. With a previous contractor, the mean time to replace a streetlight was 3.2 days. A city councilwoman thinks that the new contractor is not getting the streetlights replaced as quickly. She selects a random sample of 12 streetlight service calls for the new contractor, and obtains the following times to replacement (days). 6.2 7.1 5.4 5.5 7.5 2.6 4.3 2.9 3.7 0.7 5.6 1.7 Using a significance level of 0.01, test the councilwoman's claim. You may assume that all conditions are satisfied.
8.What is the sample variance and the estimated standard error for a sample of n = 9 scores with SS = 72? a. s2= 9 and sM = 3 c. s²= 3 and sM = 3 b. s? = 9 and SM = 1 d. s2 = 3 and sM= 1 %3D
A population has a standard deviation of 8. What is the minimum sample size needed to estimate a mean to within 2 units with 66.8% confidence? O A. 13 О В. 15 ОС. 12 O D. 16 O E. 14

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