To test Ho: o = 70 versus H,: o<70, a random sample of sizen=28 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s = 65.8, compute the test statistic. (b) If the researcher decides to test this hypothesis at the a = 0.01 level of significance, use technology to determine the P-value. (c) Will the researcher reject the null hypothesis? (a) The test statistic is x =. (Round to two decimal places as needed.)

Q: sample of n = 4 scores is selected from a population with μ  = 100 and s = 20. If the sample mean is…

A: Given information: n = 4  μ  = 100  s = 20.  sample mean is M =110

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A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

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A:

Q: To test Ho: o = 70 versus H,: o<70, a random sample of size n= 28 is obtained from a population that…

A: Given Data: n=28 s=63.8   Null and Alternate Hypothesis: H0: σ=70 HA: σ&lt;70

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A: It is given that the mean is 64 and the standard deviation is 8.

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A: a) Suppose μ is the true average weight reding on the scale.

Q: The mean noise level of 20 randomly selected areas designated as “casualty doors” was 63.1 dBA, and…

A: Given that  Level of significance =0.05 Sample sizes n1=20 , n2=24