Your claim results in the following alternative hypothesis: Ha : p << 15% which you test at a significance level of α=.01α=.01. Find the critical value, to three decimal places.
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Your claim results in the following alternative hypothesis:
Ha : p << 15%
which you test at a significance level of α=.01α=.01.
Find the critical value, to three decimal places.
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- If the value of Cronbach’s alpha is 0.07, it means ___________; a. Research instrument is not reliable b. Research instrument is internally consistent c. Data is reliable d. Data is internally consistentThe test statistics of z = -1.27 is obtained when testing the claim that μ ≠ 35.4. Use the significance level of α=0.05 to find the critical value(s).In a test of H0: µ=10 against HA: µ<10, a sample of size 100 produces Z = -2.01 for the value of the test statistic. Thus the p-value is approximately equal to:
- If the test of H0: = 19 against Ha: ≠ 19 based on an SRS of 15 observations from a Normal populationproduces the statistic of t = –1.75. The P-value isSuppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear correlation between two variables. Find the critical values of r given n = 11 at a significance level of 0.05. ±± 0.575 ±± 0.514 ±± 0.555 ±± 0.602As we have noted in previous chapters, even a very small effect can be significant if the sample is large enough. Suppose, for example, that a researcher obtains a correlation (computed from the raw data) of r = 0.60 for a sample of n = 10 participants. (4 pts. total) Is this sample sufficient to conclude that a significant correlation exists in the population? Use a two-tailed test with α = .05. In your response, be sure to specify the critical value for r.
- A random sample of 54 students from Cabrillo College are selected from a normal population with mu equal to 20 and sigma equal to 5. After a treatment is administered to the students, the researcher calculated the sample mean to be 21. Is there enough evidence to conclude that the treatment had an effect at the 5% significance level? In step three, can we use the Critical Value Method? (a)Don't know (b)Cannot Determine (c)No (d)YesThe test statistic of z= - 1.56 is obtained when testing the claim that p < 0.51. A) using a significance level a=0.01, find the critical value’sQuestion 16: Test the claim that the proportion of people who own cats is larger than 50% at the 0.005 significance level.The null and alternative hypothesis would be: H0:μ=0.5H0:μ=0.5H1:μ≠0.5H1:μ≠0.5 H0:p≤0.5H0:p≤0.5H1:p>0.5H1:p>0.5 H0:μ≤0.5H0:μ≤0.5H1:μ>0.5H1:μ>0.5 H0:p=0.5H0:p=0.5H1:p≠0.5H1:p≠0.5 H0:μ≥0.5H0:μ≥0.5H1:μ<0.5H1:μ<0.5 H0:p≥0.5H0:p≥0.5H1:p<0.5H1:p<0.5 The test is: left-tailed right-tailed two-tailed Based on a sample of 200 people, 56% owned catsThe test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
- Suppose a technician claims that her monthly repairs are less than 50 units, on average. Several of her coworkers do not believe her, so the technician decides to do a hypothesis test, at a 10% significance level, to persuade them. She records data from 16 previous months and works through the testing procedure: H0: μ=50; Ha: μ<50 x¯=41 σ=6 α=0.1 (significance level) The test statistic is z0=x¯−μ0σn√=41−50616√=−6 The critical value is −z0.1=−1.28. Conclude whether to reject or not reject H0, and interpret the results.Suppose a technician claims that her monthly repairs are less than 50 units, on average. Several of her coworkers do not believe her, so the technician decides to do a hypothesis test, at a 10% significance level, to persuade them. She records data from 16 previous months and works through the testing procedure: H0: μ=50; Ha: μ<50 x¯=41 σ=6 α=0.1 (significance level) The test statistic is z0=x¯−μ0σn√=41−50616√=−6 The critical value is −z0.1=−1.28. Conclude whether to reject or not reject H0, and interpret the results. Select the correct answer below: Reject H0. At the 10% significance level, the test results are not statistically significant and at best, provide weak evidence against the null hypothesis. Reject H0. At the 10% significance level, the data provide sufficient evidence to conclude that the mean monthly repairs is less than 50 units. Do not reject H0. At the 10% significance level, the test results are not statistically significant and at best, provide…The test statistics of z = 3.15 is obtained when testing the claim that p > 0.27. Use the significance level of α=0.01 to find the critical value(s).