Mathematics, 27.09.2019 03:00 hailey6822
The mean verbal sat score for the population of first students at radford is 520. the standard deviation of scores in this population is 95. an investigator believes that the mean verbal sat of first year psychology majors is significantly different from the mean score of the population. the mean of a sample of 36 first year psychology majors is 548. test the investigator's prediction using an alpha level of .05. a. what is the null hypothesis?
b. one tailed or two tailed?
c. what is the alternative hypothesis?
d. what statistic should be used to test the null hhypothesis?
e. calculate the test statistic?
f. what is the decision?
Answers: 1
Mathematics, 21.06.2019 17:30
The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?
Answers: 2
Mathematics, 22.06.2019 00:10
Of f(x) is byof f(x)=-3|x| x-.f(x)? a )f(x)=3|x| b) f(x)=|x+3| c) f(x)= -3|x| d) f(x)= -|x+3|
Answers: 2
The mean verbal sat score for the population of first students at radford is 520. the standard devia...
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