Part 2 of 4Compute the P-value of the test statistic. Round the answer to at least four decimal places.P-valuePart: 2/ 4Part 3 of 4Determine whether to reject H.(Choose one)the null hypothesis H,.RejectDo Not Reject Are you smarter than a second-grader? A random sample of 51 second-graders in a certain school district are given a standardized mathematics skils test. Thesample mean score is x44. Assume the standard deviation of test scores is o 15. The nationwide average score on this test is 50. The schoolsuperintendent wants to know whether the second-graders in her school district have different math skills from the nationwide average. Use thea-0.01 levelof significance and the P-value method with the TI-84 calculator.Part: 0/4Part 1 of 4State the appropriate null and alternate hypotheses.IIThis hypothesis test is a (Choose one) V test.left-tailedright-talledtwo-tailed

Given: n=51x¯=44σ=15μ=50α=0.01

Answered: Are you smarter than a second-grader? A…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An Excel assignment counts for 0-10 points. The scores in a class of 12 students are recorded as follows:1 5 5 6 7 7 8 8 8 9 10 10 What is the deviation of the score 10 from the mean in 13a (recall that this involves a subtraction of the mean from the particular score)? I think I got answer but want to check.
You have a sample of 48 randomly selected Vancouverites. On average (the sample mean), the people in your sample spent 425 hours eating food in 2020. The least time a person in the sample spent eating food in 2020 is 367 hours and the most time a person in the sample spent eating food in 2020 is 484 hours. What would be your best guess about the population standard deviation of the time a Vancouverite spent eating food in 2020? Give the number and explain (including assumptions you make about the population distribution).
Suppose that the mean score of a class of 34 students was 78. The 17 male students in the class had a mean score of 62. What was the mean score for the 17 female students?
A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. c. What proportion of people scored in the A range (90 or above)?d. What proportion of people failed the exam (60 or below)?
Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?
22 Michael took 12 tests in his math class. His lowest test score was 78. His highest test score was 98. On the 13th test, he earned a 64. Select whether the value of each statistic for his test scores increased, decreased, or could not be determined when the last test score was added. Standard Deviation Median Mean Increased Decreased Could Not Be Determined acer % & 8
In Statsville there’s a city-wide speed limit of 30 mph.If you are caught speeding the fine is $100 plus $10 forevery mile per hour you were over the speed limit. Forexample, if you’re ticketed for going 45 mph, your fine is100 + 10145 - 302 = +250. Last month all the driverswho were fined for speeding averaged 42 mph with astandard deviation of 7 mph. What were the mean andstandard deviation of the fines?A) $120 and $70 B) $220 and $7C) $220 and $70 D) $220 and $170E) $420 and $70
The mean for a data set is 61. The standard deviation is 4, and the z-score is -0.34. Find the raw score. What is the raw score? (Type an integer or a decimal.)
Find the value of the standardized test statistic.
The mean score on a set of 17 tests is 82. Suppose two more students take the test and score 66 and 56. What is the new mean?
Kindly also calculate the median, standard deviation and the coefficient of skewness from the data.
Adrianna is trying to figure out the sample size for the data set she wants to collect. She thinks the population standard deviation could be as low as 120 or as high as 136. Explain to Adrianna the impact standard deviation will have on her sample size.

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