Large Sample Proportion Problem. Surveys were conducted in multiple countriesand respondents were asked if they felt political news was reported fairly. Thedata for the United States is that out of 1,000 sampled, 470 indicated yes, theyfelt political news was reported fairly. Suppose we construct a 99% confidenceinterval and the upper and lower bounds are .4293 to .5107.What can I conclude about a two-tailed hypothesis test where Ho: P=.5 and alphais .01?I don't have enough information to make a conclusion.I would fail to reject the Null Hypothesis that P = .5I would be able to reject the Null Hypothesis that P=.5, but only for a one-tailed test.I would be able to reject the Null Hypothesis that P = .5

Sample size n =1000 Favorable cases x =470

Answered: arge Sample Proportion Problem. Surveys…

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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When one changes the significance level of a hypothesis test from 0.10 to 0.05, which of the following will happen? Check all that apply. A. The chance that the null hypothesis is true changes from 0.10 to 0.05. OB. The test becomes less stringent to reject the null hypothesis (i.e. it becomes easier to reject the null hypothesis). c. It becomes harder to prove that the null hypothesis is true. OD. The chance of committing a Type I error changes from 0.10 to 0.05. ⒸE. The chance of committing a Type II error changes from 0.10 to 0.05. OF. It becomes easier to prove that the null hypothesis is true. ⒸG. The test becomes more stringent to reject the null hypothesis (i.e., it becomes harder to reject the null hypothesis).
a. What are the null and alternative hypotheses? b. The test statistic, t, is c. The P-value is d. State the conclusion for the test. e. Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.
The coach of a very popular men’s basketball team claims that the average distance the fans travel to the campus to watch a game is 35 miles. The team members feel otherwise. A sample of 16 fans who travel to games was randomly selected and yielded a mean of M= 36 miles and s= 5 miles. Test the coach’s claim at the 5% (.05) level of significance. one-tailed or two-tailed test: State the hypotheses: df= tα or t value for the critical region = sM = t (test statistic)= Decision:
Suppose a 95% confidence interval for the difference in test scores between Class 1 and Class 2 (in that order) is the following: 9 +/− 2. These results were based on independent samples of size 100 from each class. Now suppose you switch the order of Class 1 and Class 2 in your analysis but keep the data labeled correctly in terms of which class they came from. Which of the following statements is false? A) You can't do it this way. You'll get negative numbers for the difference in the means and/or negative numbers for the standard error. B) You are confident that the average for Class 2 is 7 to 11 points lower than for Class 1. C) You are still confident that the classes have significantly different mean scores. D) Your 95% confidence interval will now be entirely negative: from −7 to −11.
Answer question 7 and 8
You are conducting a multinomial hypothesis test for the claim that the 4 categories occur with the following frequencies:HoHo : pA=0.1pA=0.1; pB=0.4pB=0.4; pC=0.25pC=0.25; pD=0.25pD=0.25Complete the table. Category ObservedFrequency ExpectedFrequency SquaredResidual A 4 B 39 C 29 D 25 What is the chi-square test-statistic for this data?χ2=Report all answers accurate to three decimal places.
A research group wants to estimate the proprtion, p, of americans who can speak a language other than English. By referencing past data, the group belive that more than 45% of Americans can do so. a. state the null and alternative hypotheses for testing the group's belief/ b. If the value of the test statistic is approximately 1.46, what is the conslusion (reject H0 of fail to reject H0) of the hypotesis test? with a-0.05 c. If the true balue of is 48%, did the researchers make an error? if so what type?
Verizon Wireless would like to estimate the proportion of households that use cell phones for their phone service without a land line. A random sample of 150 households was selected and 48 relied strictly on cell phones for their service. The 95% confidence interval for the proportion based on this sample is ________. A) (0.257, 0.383) B) (0.223, 0.417) C) (0.185, 0.456) D) (0.165, 0.475)
a. What are the null and alternative hypotheses? b. The test statistic, t, is c. The P-value is d. State the conclusion for the test. e. Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.
.Explain the meaning of the (a) Do the data indi region is higher than that in New England? Use a = (b) Find a 98% confidence interval for u confidence interval in the context of the problem. ain 0.01. H. Explain the meaning of the 16. Medicine: Hay Fever A random sample of n. Kansas gave the following information for people under 25 years of ace 16 communities in western %3D 1 : Rate of hay fever per 1000 population for people under 25 x,: 120 128 92 123 112 93 98 90 127 88 125 95 125 117 97 122 14 regions in western Kansas gave the following A random sample of n, information for people over 50 years old:
You are conducting a multinomial hypothesis test for the claim that the 4 categories occur with the following frequencies:HoHo : pA=0.2pA=0.2; pB=0.3pB=0.3; pC=0.2pC=0.2; pD=0.3 Complete the table. Category ObservedFrequency ExpectedFrequency SquaredResidual A 21 B 25 C 21 D 16
O.3. Question Help A group of students estimated the length of one minute without reference to a watch or clock, and the times (seconds) are listed below. Use a 0.10 significance level to test the claim that these times are from a population with a mean equal to 60 seconds. Does it appear that students are reasonably good at estimating one minute? 66 80 37 66 45 22 62 66 65 45 64 73 94 91 63 O Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? O A. Ho: u= 60 seconds H:µ#60 seconds O B. Ho: H= 60 seconds H4:µ 60 seconds O D. Ho: u#60 seconds H:µ = 60 seconds Click to select your answer and then click Check Answer. ? 3 3 parts remaining Clear All Check Answer MacBook 888 DD esc. F7 F8 F9 F10 F11 F12 F3 F4 F5 F6 F1 @ $ & 1 2 4 5 7 8 Q W E R. T Y tab A S G J K os lock C V B # 3

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