Activity 3. Test of Hypothesis on Population Mean. Solve the following problems. Showyour complete solution.1. A random sample of 1000 college students from a certain university shows that theiraverage expenses in one semester on books is Php 1750 with a standard deviation ofPhp 390. Test the hypothesis that their average expenses in one semester on booksis Php 1800 at 1% level of significance.

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Answered: Activity 3. Test of Hypothesis on…

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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A test was designed to have a mean of 80 and a standard deviation of 10. A random sample of 20 students at your school take the test, and the mean score turns out to be 85. Does this score differ significantly from 80? To answer this problem, you may want to use the Normal Distribution Calculator.
The mean score on a driving exam for a group of drivers education students is 72 points with a standard deviation of 6 points. apply Chebyshev theorem to the data using K=2. Interpret the results. Simplify answer.
Suppose a researcher wants to test if the average diastolic blood pressure in African-Americans is different than the average diastolic blood pressure in the general population. Note that the average diastolic blood pressure in the general population is 70 mmHG. The researcher retains the null hypothesis, so she therefore concludes... Group of answer choices The mean diastolic blood pressure in African-Americans is equal to that of the general population The mean diastolic blood pressure in African-Americans is different than that of the general population
Suppose the mean miles per gallon for a sample of 70,000 new cars and light trucks sold in the United States in 2017 differs from the population mean by more than one gallon. How would you interpret this result?
A population has a mean of u=50 and a standard deviation of 0=10. If 3 points were added to every score in the population, what would be the new values for the mean and standard deviation?
2. On a standardized test, Sara had a score of 81, which was exactly 2 standard deviations below the mean. If the standard deviation for the test is 3, what is the mean score for the test?
On average, a sample of n = 36 scores will provide a better estimate of the population mean than a sample of n = 49 scores from the same population.
The mean score for first exam in your first organic chemistry class (section A) was 60, with a standard deviation of 5. Your score on the exam was 70. A. How many standard deviations above the mean is your score?
Assume the cholesterol levels of an adult can be described by a Normal model with a mean of 183 mg/dL and a standard deviation of 27. Complete parts a through e. b) What percent of adults do you expect to have cholesterol levels over 190 mg/dL? enter your response here % (Round to two decimal places as needed.) Part 3 c) What percent of adults do you expect to have cholesterol levels between 150 and 160 mg/dL? enter your response here % (Round to two decimal places as needed.) Part 4 d) Estimate the interquartile range of cholesterol levels. IQR=enter your response here mg/dL (Round to the nearest integer as needed.) Part 5 e) Above what value are the highest 15% of adults' cholesterol levels? enter your response here mg/dL (Round to the nearest integer as needed.)
Solve the following. Show the complete solution. 1. The daily income of bank auditors in SSS Commercial Bank is normally distributed with a mean ₱675 and a standard deviation of ₱50. What is the z value for the income X of a bank auditor who earns ₱750 daily? For an auditor who earns ₱550 daily? 2. The length of time needed for service a motorcycle at ETS Service Station is normally distributed with a mean of 6.5 minutes and standard deviation of 1.5 minutes. What is the probability that a randomly selected motorcycle will require more than 7 minutes of service or under 5.5.minutes of service?
Suppose that the mean and standard deviation for vertical jump scores are 40 and 6 cm respectively. A York student jumps 52 cm on the vertical score. Translate the student’s jump into a z-score.

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