Mathematics, 03.06.2020 03:58, xaviercamara080
One of the many wonderful things about studying statistics is that graduate programs in statistics often pay their graduate students, which means that many graduate students in statistics are able to attend graduate school tuition free with an assistantship or fellowship. In 2009, there were US statistics or biostatistics doctoral programs for which enrollment data were available.1 The dataset StatisticsPhD lists all these schools together with the total enrollment of full-time graduate students in each program in 2009.
Required:
a. Use StatKey or other technology to select a random sample of 10 of the 82 enrollment values. Indicate which values you've selected and compute the sample mean.
b. Repeat part (a) by taking a second sample and calculating the mean.
c. Find the mean enrollment for the entire population of these 82 graduate programs. Use correct notation for your answer. Comment on the accuracy of using the sample means found in parts (a) and (b) to estimate the population mean.
d. Use Statkey or other technology to generate a sampling distribution. Generate 5000 sample proportions. Give the shape and center of the sampling distribution and give the standard error
e. What does each dot on the sampling distribution generated in part (d) represent? (f) Findthe interval that contains approximately 95% of all sample means using the standard error and the center from part d.
Answers: 3
Mathematics, 21.06.2019 17:30, rwbrayan8727
Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.
Answers: 2
Mathematics, 22.06.2019 01:20, GreenHerbz206
Given: δabc, m∠1=m∠2, d∈ ac bd = dc m∠bdc = 100º find: m∠a m∠b, m∠c
Answers: 2
One of the many wonderful things about studying statistics is that graduate programs in statistics o...
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