Mathematics, 09.12.2021 02:30 amanditafarinap3bw7g
A credit card company claims that the mean credit card debt for individuals is greater than $5,000. You want to test this claim. You find that a random sample of 35 cardholders has a mean credit card balance of $5,160 and a standard deviation of $625. At α=0.05, can you support the claim? Assume the population is normally distributed. a) Write the claim mathematically and identify H o and H a?(b) Find the critical value(s) and identify the rejection region(s).What is(are) the critical value(s)?(c) Find the standardized test statistic t.(e) Interpret the decision in the context of the original claim.
Answers: 3
Mathematics, 21.06.2019 19:00
You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?
Answers: 1
Mathematics, 21.06.2019 19:30
Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
Mathematics, 21.06.2019 23:30
Dots sells a total of 279 t-shirts ($2) and shorts ($4). in april total sales were $670. how many t-shirts and shorts did dots sell?
Answers: 1
A credit card company claims that the mean credit card debt for individuals is greater than $5,000....
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