Suppose the final examscores in Statistics andProbability of all SHSstudents at LagunaState PolytechnicUniversity follow thenormal distribution withpopulation mean of 32and standard deviationof 7. Further, theteacher assumes thatthe true mean is 32. Arandom sample of 32SHS students wereselected and their finalexam scores weregathered. Thecomputed sample meanis 29. Is there enoughevidence to say that theteacher's claim of thetrue mean is true? Use0.05 level ofsignificance. Conductthe five steps ofhypothesis.

Given : Claim : True mean of final exam score in Statistics & Probability of all SHS student is…

Answered: Suppose the final exam scores in…

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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The mean number of english courses taken in two-year time period by male and female college students is believed to be about the same. An experiment is conducted and data are collected from 29 males and 16 females. The males took an average of 3 english courses with a standard deviation of 0.8. The females took an average of four english courses with a standard deviation of 1.0. Are the means statistically the same?
The GSS survey is conducted for approximately 2200 adults every year, since 1972 for a total of more than 38,000 participants. During several years of the GSS, participants were asked how many close friends they have. The mean for this variable was 7.44 friends, with a standard deviation of 10.98. The median was 5.00 and the mode was 4.00. What do the mean and standard deviation suggest about the shape of the distribution?
Suppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 12 million dollars and a standard deviation of 1.3 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 20% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place. million dollars X S
What does it mean when you have standard deviations of 27 35 and 32 and its effect on the validitity of the data you are accessing to interpret for statistical anaylsis?
Suppose that IQ scores have a bell-shaped distribution with a mean of 101 and a standard deviation of 14. Using the empirical rule, what percentage of IQ scores are at least 115? Please do not round your answer.
Suppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 9 million dollars and a standard deviation of 1.4 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 10% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
Suppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 8 million dollars and a standard deviation of 1.3 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 10% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place. 00 0 million dollars X S ? Check acer Q tab esc ! 1 9. a @ 2 W →> S #m 3 X e C d $ LAS 4 C r % 5 f t > < 6 g y & JX b 7 h C n K1300
Suppose that IQ scores have a bell-shaped distribution with a mean of 99 and a standard deviation of 17. Using the empirical rule, what percentage of IQ scores are less than 133? Please do not round your answer.
The number of orders received daily by an online vendor of used CDs is normally distributed with mean 260 and standard deviation 20. The company has to hire extra help or pay overtime on those days when the number of orders received is 310 or higher. What percentage of days will the company have to hire extra help or pay overtime? Click the icon to view the standard normal distribution table. The company will have to hire extra help or pay overtime on % of days.
Suppose that a sample of size 52 is drawn from a population with mean 23 and standard deviation 39 . Find the value of , the standard deviation of the distribution of sample means.
Suppose that the mean IQ score for University Students is 105, with a standard deviation of 7. Assuming a normal distribution, what are the cutoffs that will capture those people who are within one standard deviation of the mean?

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