8. An English test has a mean of 104 points and a standard deviation of 24. A sample of 75students are taught using a new method to see if their scores improved. The sample meanwas 107 points.a) State the null and alternative hypotheses.b) Determine whether the results are statistically significant at a = .01.c) State your statistical decision.d) Write your answer in proper APA notation.

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Answered: 8. An English test has a mean of 104…

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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c) A dispensing machine fills Yomi’s yogurt drinks into cups. The volume of a Yomi’s yogurt drink is normally distributed with a mean of 520 ml and a standard deviation of 5 ml.Question(ii) 4.8% of the of the Yomi’s yogurt drink is having the volume to be less than k ml. Find the value of k.
In a taste test, people were given three cups of water to taste. Onewas bottled water and the other two were tap water. Mr. Bullards'class of 21 students participated in this experiment. Assuming youcannot tell the difference, what is the mean and standard deviationfor the number of correct guesses.
Please solve in a descriptive statistic way
Twenty-six percent of all automobiles undergoing an emissions inspection at a certain inspection station fail the inspection. Suppose 20 randomly selected cars are tested. Round all answers three decimal places. 1)Find the mean number of cars which will fail the inspection.2) Find the standard deviation of the number of cars that will fail the inspection.
1. What symbol (letter) do you use in the Ho and Ha if your problem involves means? 2. What symbol (letter) do you use in the Ho and Ha if your problem involves proportions? 3. What symbol (letter) do you use in the Ho and Ha if your problem involves standard deviations?
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2. Get a tip measure and identify 20 of your classmates in random selections and measure their height in centimeters. Tabulate the measured height and obtain the following: (OBE Approach) (i) Mean (ii) Median (iii) Mode
Assume that in a given year the mean mathematics SAT score was 495, and the standard deviation 111. A sample of 61 score is chosen. ANSWER ALL QUESTIONS PLEASE SHOW WORK A.What is the probability that same mean score is less than 484? B. The probability that the sample mean score is between 460 and 500 is? C. The 10th percentile of the sample mean is D. Would it be unusual if the sample mean were greater than 520? And what is the probability? E. Do you think it would be unusual for an individual to get a score greater than 520? What is the probability
A research scientist wishes to test the claim that the mean number of children per classroom in California elementary school is less than 35. She selects a simple random sample of 42 California elementary school classrooms. Are the requirements to test the claim met? Explain in 1 - 2 complete sentences.
kindly answer the letter D item only I got assistance from the first 3. show the complete solution and capture your image well.

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