Machines at a factory are supposed to dispense 250 grams of sugar per pack. Arandom sample of sugar packs is taken from the factory, and their contents (ingrams) are measured. Following are the sample data:247247247248249250250250251251Is there sufficient evidence to conclude that the machines do not conform tothe indicated sugar amount? Use 0.10 level of significance.Which case for hypothesis testing must be used?( Select ]What is the alternative hypothesis? ( Select ]What is the value of the test statistic? [ Select ]What is/are the critical value/s? Select ]What is the appropriate conclusion? [Select

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Answered: Machines at a factory are supposed to…

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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Listed below are the heights (in inches) of fathers and their first sons. The dataare from a journal kept by Francis Galton. Use a 0.05 significance level to testthe claim that there is no difference in heights between fathers and their firstsons. (State the null and alternate hypothesis, the p-value method to make adecision, and write a conclusion based on the results.) Height of Father 72.0 66.0 69.0 70.0 70.0 70.0 70.0 75.0 68.265.0Height of Son 73.0 68.0 68.0 71.0 70.0 70.0 71.0 71.0 70.063.0
If, in a one-tail hypothesis test where H0 is only rejected in the upper tail, the p-value=0.6792 and ZSTAT=−0.47,what is the statistical decision if the null hypothesis is tested at the 0.07 level of significance? What is the statistical decision? Since the p-value is Less than or Greater than or equal to a= , Reject , Do not reject H0.
Use the traditional method to test the given hypothesis. Assume that the samples are independent and that they have been randomly selected. A researcher finds that of 1000 people who said that they attend a religious service at least once a week, 31 stopped to help a person with car trouble. Of 1200 people interviewed who had not attended a religious service at least once a month, 22 stopped to help a person with car trouble. at the 0.05 significance level, test the claim that the two proportions are equal.
Consider the following hypothesis statement using α=0.10 and the following data from two independent samples. Complete parts a and b below. H0: p1−p2≥0 x1=74 x2=76 H1: p1−p2<0 n1=125 n2=170 a. Calculate the appropriate test statistic and interpret the result. What is the test statistic? What is/are the critical value(s)? b. Calculate the p-value and interpret the result. What is the p-value?
The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2019 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2019 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?
Use the dataset HT_2448.xls. Using Excel, conduct a t-test (at the alpha = 0.01 significance level) on whether the mean of X1 is equal to 100. What do you conclude from this sample data? Is the population mean equal to 100? Group of answer choices: a-You cannot reject the null hypothesis. You conclude that the population mean is equal to 100. b-You reject the null hypothesis. You conclude that the population mean is equal to 100. c-You reject the null hypothesis. You conclude that the population mean is not equal to 100. d-You cannot reject the null hypothesis. You conclude that the population mean is not equal to 100. Data set HT_2448.xls X1 X2102.04 96.13100.47 97.63103.17 95.4295.09 104.41103.81 102.0895.36 103.33103.38 112.25100.26 96.9397.24 100.1999.61 102.7096.00 106.94100.69 102.29100.50 100.0098.81 97.6795.15 99.09100.01 98.57102.88 97.70101.36 108.11103.05 106.9496.17…

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