What is the chi-square test-statistic for this data?

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A left-tailed z-test found a test statistic of z = -1.99. At a 5% level of significance, what would the correct decision be?   Question 20 options:   Do not reject H0   Do not reject H1   Accept H0   Reject H1   Reject H0

Professor Nord stated that the mean score on the final exam from all the years he has been teaching is a 79%.  Colby was in his most recent class, and his class’s mean score on the final exam was 82%.  Colby decided to run a hypothesis test to determine if the mean score of his class was significantly greater than the mean score of the population.  α = .01. What is the mean score of the population? What is the mean score of the sample? Is this test one-tailed or two-tailed? Why?

Consider a two-tailed test with a level of confidence of 84.90%. The z-value is _______. 2.88 1.44 1 2.11

You are conducting a multinomial Goodness of Fit hypothesis test for the claim that the 4 categories occur with the following frequencies: H.: PA = 0.4; PB 0.1; Pc = 0.3; PD %3D0.2 Complete the table. Report all answers accurate to three decimal places. Observed Expected Frequency Frequency Category A 50 24 28 34 What is the chi-square test-statistic for this data? (2 decimal places) x = %3| What is the P-Value? (3 decimal places) P-Value = For significance level alpha 0.1, What would be the conclusion of this hypothesis test? O Fail to reject the Null Hypothesis O Reject the Null Hypothesis

You are conducting a multinomial Goodness of Fit hypothesis test for the claim that the 4 categories occur with the following frequencies:HoHo : pA=0.4  pB=0.3 ;  pC=0.15 ;  pD=0.15Complete the table. Report all answers accurate to three decimal places. Category ObservedFrequency ExpectedFrequency Residual A 44     B 34     C 32     D 19     What is the chi-square test-statistic for this data?χ2=For significance level alpha 0.1, what is the chi-square Critical Value?Critical Value = What would be the conclusion of this hypothesis test? Reject the Null Hypothesis Fail to reject the Null Hypothesis Report all answers accurate to three decimal places

Clinical tests of the allergy drug Seldane yielded the results summarized in the table below. At the 5%5% significance level, test to determine if there is a relationship between the use of the drug and the occurrence of headaches.        Seldane Users Placebo Users Control Total Headache 42 56 60 158 No headache 760 682 635 2077 Total 802 738 695 2235   Perform a Chi-squared test in the following steps: Step 1: State the null and alternative hypotheses:  H0:H0:There is       between the use of the drug Seldane and the occurrence of headaches.  H1:H1: There is       between the use of the drug Seldane and the occurrence of headaches. Step 2: Find the critical value(s): State αα-value (in decimals) with the degree(s) of freedom, separated by a comma.  State the critical value(s): CV= (Do not round the table value.) Step 3. State the rejection region: Which area(s) is/are rejection region(s)?       Reject H0H0 if test statistic value         the critical value(s).…

The test statistic in a​ left-tailed test is z=−0.59. Determine the​ P-value and decide​ whether, at the 10​% significance​ level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. The​ P-value is ___________ ​(Round to four decimal places as​ needed.)   This​ P-value ________________ (provides, does not provide) sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis because it is_____________(greater than, less than) the significance level.

You are conducting a test of independence for the claim that there is a relationship between favorite ice cream flavor and gender. Use a significance level of .01. Vanilla Chocolate Strawberry Male | 32 67 37 Female 24 40 25 The expected observations for this table would be (Round to 3 decimal places.) Vanilla Chocolate Strawberry Male Female At the .01 significance level, what is the critical chi-square for this data? (Round to 3 decimal places.) с What is the chi-square test-statistic for this data? (Round to 3 decimal places.) What can you conclude about Gender and Favorite Ice Cream Flavor? Gender and Ice Cream Flavor are Dependent O Gender and Ice Cream Flavor are Independent