The claim is that weights (grams) of quarters made after 1964 have a mean equal to 5.670 g as required by mintspecifications. The sample size is n = 40 and the test statistic is t= - 2.919. Use technology to find the P-value. Basedon the result, what is the final conclusion? Use a significance level of 0.01.drugest ofes df cState the null and alternative hypotheses.Ho:Hdrug useest of thees df den(Type integers or decimals. Do not round.)

Answered: The claim is that weights (grams) of…

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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Test the claim about the population mean, µ, at the given level of significance using the given sample statistics. Claim: μ = 50; x = 0.05; o = 3.12. Sample statistics: x = 48.8, n = 76 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: μ = 50 H₂:μ#50 O C. Ho: μ> 50 H₂: μ = 50 O E. Ho: μ = 50 H₂:μ>50 O B. Ho: μ<50 H₂: H=50 O D. Ho: μ = 50 Ha:μ < 50 O F. Ho: μ#50 H₂:μ=50
I'm stuck, i can not get past the second part.
Test the claim below about the mean of the differences for a population of paired data at the level of significance a. Assume the samples are random and dependent, and the populations are normally distributed. Claim: Hd = 0; a = 0.01. Sample statistics: d = 3.1, s = 8.72, n = 9 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: Ha 0 Ha: Hd s0 F. Ho: Ha s0 Hai Hd>0 The test statistic is t= 1.07 . (Round to two decimal places as needed.) The critical value(s) is(are) to (Round to two decimal places as needed. Use a comma to separate answers as needed.)
The manufacturer claims that your new car gets 32 mpg on the highway. You suspect that the mpg is more for your car. The 69 trips on the highway that you took averaged 35.7 mpg and the standard deviation for these 69 trips was 12.4 mpg. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0:H0: ? p μ Select an answer ≠ = < > H1:H1: ? μ p Select an answer ≠ > = < The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ αα Based on this, we should Select an answer reject fail to reject accept the null hypothesis. Thus, the final conclusion is that ... The data suggest that the population mean is not significantly more than 32 at αα = 0.05, so there is statistically insignificant…
How do you find the p-value for this?
The claim is that smokers have a mean cotinine level greater than the level of 2.84 ng/mL found for nonsmokers. (Cotinine is used as a biomarker for exposure to nicotine.) The sample size is n 810 and the test statistic is t=55.337. Use technology to find the P-value. Based on the result, what is the final conclusion? Use a significance level of 0.01. State the null and alternative hypotheses. Ho H H₁H (Type integers or decimals. Do not round.)
For the specified margin of error and confidence level, obtain a sample size that will ensure a margin of error of at most the one specified. margin of error = 0.03; confidence level = 90% Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. n= (Round up to the nearest integer.)
Could you please show how to find the P Value using a Calculator (TI 84) and a Standard Normal table, the calculator way is the most important.
Listed below are the lead concentrations in mu g/g measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 18 mu g/g. Assume that the sample is a simple random sample. a. Determine the test statistic. (Round to two decimal places as needed.) b. Determine the P-value. (Round to three decimal places as needed.)
Test the claim about the population mean, μ, at the given level of significance using the given sample statistics. Claim: μ = 40; x = 0.05; o = 3.96. Sample statistics: x= 38.5, n = 53 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: μ> 40 H₂:μ = 40 Ho: μ = 40 H₂:μ>40 O C. Ho: μ<40 H₂:μ=40 O E. Ho: μ = 40 H₂: μ#40 12 B. OD. Ho: p=40 Ha: μ<40 OF. Ho: μ#40 Ha: H=40
Assume that a simple random sample has been selected from a normally distributed population. State the final conclusion.Test the claim that the mean lifetime of car engines of a particular type is greater than 220,000 miles. Sample data are summarized as n = 23, and s = 11,500 miles. Use a significance level of α = 0.01.H0: μ = 220,000 HA: μ > 220,000State your conclusion about H0. Choose the best answer below: A. Reject HA B. Do not reject H0 C. Do not reject HA D. Reject H0 E. Cannot draw a conclusion for information given
Below are the SPSS results of a related (dependent) samples t-test. Use the SPSS results to answer Questions 5, 6, and 7. Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 Statistics Posttest 57.1250 40 16.73962 2.64677 Statistics Pretest 49.9250 40 15.09014 2.38596 Paired Samples Test Paired Differences t df Sig. (2-tailed) Mean Std. Deviation Std. Error Mean Pair 1 Statistics Posttest - Statistics Pretest 7.200 12.313 ( a ) ( b ) ( c ) .001 Find the mean of the differences ( and standard deviation of the differences (Sd). Replace “a,” “b,” and “c” in the table above with the correct values. Round to the third decimal place. Do you think there is a statistically significant difference between the pretest and posttest at the .05 level of significance?

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