X = 45.5          s = 4.81           N= 50 What raw score guesses define the middle 95% of the scores? What raw score guesses define the middle 99% of the sc

Is the average time to complete an obstacle course different when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 40 40 41 43 49 48 45 48 Left 37 36 41 43 48 46 46 43 Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Họ: pd vV (please enter a decimal) Select an answer v H1: ud vv (Please enter a decimal) Select an answer v b. The test statistic t v- (please show your answer to 3 decimal places.) c. The p-value = (Please show…

Renee wants to estimate the percentage of people who lease a car. She surveys 140 individuals and finds that 115 lease a car. What is the sample proportion for successes, p? Round the final answer to three decimal places. Provide your answer below:

If the proportion of Heads is .25 out of 200 flips, what is the p-value? Round to three places.

As part of a sixth-grade class project the teacher brings to class a jar containing 200 gumballs of two different colors: red and green.  Andy is asked to draw a sample of his own choosing and estimate the number of red gumballs in the jar.  Andy draws a sample of 25 gumballs, of which 8 are red and 17 are green.  Use Andy's sample to estimate the number of red gumballs in the jar. There are approximately Answer red gumballs in the jar.

The Bangor Humane Society tracks cat adoptions closely. They sample 54 people who looked at cats this month and find that 36 of them adopted cats. What is the sample proportion (p-bar)? Round your answer to 2 decimal places.

A sample of 2600 people were asked if they felt "good" about the economy. A 95% CI for the proportion who answer 'yes' is: 0.54 < p < 0.62 Many textbooks use the symbol p for the sample proportion. What is p in this problem? Submit Question Previous

374 is 22% of the sample size. Find n

Explain what each phrase means in the context of inferences for a population proportion. a. Number of successesb. Number of failures

There are 9700 subject with 1940 showing improvement, what is the margin of error for a 99% interval