A group of commerce students conducted a study on consumer credit with 27 randomly selectedcard holders surveyed. The mean amount charged last year was found to be Php3,450.00, whilethe standard deviation was Php587.00. Use 0.05 level of significance to test the claim that themean amount charged by all credit card holders was greater than Php2,000.00.

Solution:- Given : We want to test the claim that the mean amount charged by credit card holders was…

Answered: A group of commerce students conducted…

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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Similar questions

The average wage for bank managers in a certain city is $91,900 per hour with a standard deviation of $24,300. What should be the hourly wage for an administrator if he/she wishes to earn less than 25% of all employees?
The mean IQ of 200,000 current and past University of Manitoba students has been found to be 81.9. The standard deviation was found to be 13.1. The student enrollment at the University of Manitoba in 2016 was 29,987. The minimum IQ to be able to graduate from the University of Winnipeg has been found to be 104. Of the 29,987 students at the University of Manitoba in 2016, how many would be expected to be smart enough to graduate from the University of Winnipeg? Assume a Gaussian distribution.
The US mean height for adult men is = 68.5 inches, with a standard deviation of = 3 inches. The mean height for adult women is = 62.7 inches, with a standard deviation of = 2.7 inches. Who is taller relative to their gender, a man 75 inches tall, or a woman 68 inches tall?
According to a website, the mean number of apps on a smartphone in the United States is 85. Assume the number of apps is normally distributed with mean 85 and standard deviation 23. What proportion of phones have fewer than 99 apps? Round the answer to four decimal places. The proportion of phones that have fewer than 99 apps is .
A random sample of 47 cars in the drive-thru of a popular fast food restaurant revealed an average bill of $17.51 per car. The population standard deviation is $6.05. Estimate the mean bill for all cars from the drive thru with 91% confidence.
A researcher believes the mean weight of males sulcata tortoises is more than 205 pounds. She samples 18 males sulcatas and find their mean to be 216.2 pounds with a standard deviation of 13.5pounds. Find the p-value p =
The admission committee of AUCA passes 33% of those who took the exam. If the scores follow a normal distribution with a mean of 85 and a standard deviation of 9, what is the passing score?
For team A, the average number of goals scored per match was 2 with standard deviation (SD) of 1.09 goals. For team B, the average number of goals scored per match was 2.5 with standard deviation (SD) of 1.25 goals. Find which team may be considered more consistent?
Imagine that for those who meditate daily, the number of minutes in meditation has mean 35 and standard deviation 10. In a group of 200 such persons, how many are expected to meditate more than 43 minutes per day?
An economist would like to estimate the mean amount of money that a family spends to within $82. If the amount spent by a family is considered to be normally distributed with a standard deviation of $490, what sample size would be necessary to be 96% confident?

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