Eight people were selected and initially measured for number of mistakes when juggling a ball. Then the people were taught to juggle and retested after a period of time. What t-test should be used to determine if their performance improved after being taught how to juggle?

Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 280 of 750 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the a= 0.05 level of significance. Because npo (1- Po) =L V10, the sample size is V 5% of the population size, and the sample the requirements for testing the hypothesis V satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? 7 versus H, (Type integers or decimals. Do not round.) Find the test statistic. Zp = (Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as needed.) Determine the conclusion for this hypothesis test. Choose the correct answer below. O A. Since P-value a, reject the null…

in the highest 2.5 percent eat?  What is the z-score?

Brandon's score in the high jump at a track and field event showed that he was only able to jump higher than 27% of his competitors. Find the z score for Brandon's high jump score.

What’s the formula to turn a Z score to a T score?

Do the four steps: State, Plan, Do, Conclude.

Find the 90th percentile. So 10% of the TV sets last more than what length of time?

In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean score on test Number of ninth graders Glenwood 77 259 Central City 90 344 Lincoln High 66 171 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 77.7 . Of course, that is incorrect. What is the mean score for all ninth graders in the city? USE EXCEL. Round your answer to one decimal place.

A mother bought 4 pieces, namely, apples, mangoes, oranges, and strobey with a proportion of 25%, 15%, 10%, 50%. The size of the possibility of sticking to the house is 0.05; 0.10; 0.15; 0.20. What is the opportunity for fruit damage to the house?

During a season, the 40th percentile for points scored per player in a game is eight. Interpret the 40th percentile in the context of this situation. Forty percent of players scored 8 points or Sixty percent of players scored 8 points or more less