test the following claim (Ha) at a significance level of a = 0.05. = 84.3 > 84.3 e the population is normally distributed, but you do not know the standard deviation. You obta of size n = 118 with mean M = 86.2 and a standard deviation of SD = 9.6. e test statistic for this sample? (Report answer accurate to three decimal places.) tic = 2.15 me p-value for this sample? (Report answer accurate to four decimal places.) ue is... s than (or equal to) a ater than a statistic leads to a decision to... ect the null cept the null I to reject the null the final conclusion is that... ere is sufficient evidence to warrant rejection of the claim that the population mean is greater an 84.3. oro is not sufficient evidence to warrant rejection of the claim that the population mean is

The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

Consider the following data: x 4 5 6 7 8 P(X = x) 0.2 0.2 0.1 0.2 0.3 Step 3 of 5: Find the standard deviation. Round your answer to one decimal place. Copy Data

The results of a certain medical test are normally distributed with a mean of 123 and a standard deviation of 20. Convert the given results into z-scores, and then use the table below to find the percentage of people with readings between 151 and 171. z-score Percentile z-score Percentile 1.0 84.13 2.1 98.21 1.1 86.43 2.2 98.61 1.2 88.49 2.3 98.93 1.3 90.32 2.4 99.18 1.4 91.92 2.5 99.38 -C 1.5 93.32 2.6 99.53 The percentage of people with readings between 151 and 171 is %. (Round the final answer to the nearest hundredth as needed. Round the z-score to the nearest tenth as needed.) 1.6 94.52 2.7 99.65 1.7 95.54 2.8 99.74 1.8 96.41 2.9 99.81 1.9 97.13 3.0 99.87 2.0 97.72 3.5 99.98