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A botanist wishes to test the null hypothesis that the average diameter of the flowers of a particular plant is 9.6cm. He decides to take a random sample of size n=80 and accept the null hypottesis if the mean of the sample falls between 9.3 cm to 9.9cm: if the mean of this sample falls outside this interval, he will reject the null hypothesis. What decision will he make and will it be in error if
a) he gets a sample mean of 10.2 cm amd Mu=9.6cm:
b)he gets a sample mean of 10.2 cm and Mu=9.8cm:
c)he gets a sample mean of 9.2 cm and Mu=9.6cm:
d)he gets a sample mean of 9.2 cm and Mu=9.8cm?
How many ways are there of obtaining 10 patients expressing a preference for drug A. Repeat for 9 patients. 8 patients. ... 1, 0 patients. Tabulate your results - What is the probability of having eight patients express a preference for drug A if ..
A farmer in Iowa owns 45 acres of land. He is going to plant each acre with wheat or corn. Each acre planted with wheat yields $200 profit, requires 3 workers, and requires 2 tons of fertilizer; each with corn yields $300 profit, requires 2 worker..
Explain the bias and sampling error in this study.
type your question here an article in the jornal of statstic education reported the price of diamond of different carat
which of the following are determinants of a sample size for a clinical research trial?a. alpha type 1 errorb. the
Using the data for women, complete an analysis of CHD incidence in women similar to the one completed for men.
The controller of Dash Shoes Inc. instructs you to prepare a monthly cash budget for the next three months. You are presented with the following budget information:
What is the approximate probability that the mean diameter x of the sample of 25 bearings will lie within 0.0001 inch of the population mean diameter of the bearings?
Provide one bar chart for each hospital. This means seven charts for all seven hospitals. Then, provide bar chart to compare data from hospital one with data from other six hospitals.
a let x have t-distribution with 29 degrees of freedom. what is the distribution of x2?b let x and y be normal.what is
Basic Statistics problem
Then suppose that a sample of 4000 women had produced the sample mean 275, and again give the 95% confidence interval for the population mean. What can you say about the effect of sample size on confidence intervals?
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