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Hypothesis are: Ho: µ=120 and Ha: µ>120.
Sample with n=49 has mean x¯ = 122. Distribution is Normal and standard deviation σ = 30.
Find p-value for this test.
Text me The percentile plot below shows the distribution of text messages sent and received in a two-day period by a random sample of 16 females from a large.
You would like to test the claim that the variance of a normally distributed population is more than 2 squared units.
If the number of heads turns out to equal one of your 11 numbers, you win a dollar. which 11 numbers should you pick, and what is your chance of winning? explain.
tom parks his car at a meter without paying for 1 hour. a parking enforcement officer checks for parking violations an
Find the probability that among the next 5 thefts cases reported in this district. Exactly 2 resulted from the need for money to buy drugs.
Calculate the Functional Form of Average Variable Cost
The Federal Government of Australia uses the cash rate to control the inflation rate in Australia. Is there statistical evidence to support such a policy?
The New York Times study of appliances reported 2.5 television sets per household in 2001.
Verify that the 0.95 confidence interval for the slope is (0.14, 0.17). Would you reject H0 :β1 = 0? Based on this confidence interval only, can you be reasonably certain that generally, as X increases, Y increases as well?
Construct the 90% confidence interval for the true population proportion of all voters in the state who favor approval.
a regression line was calculated as y 42.5 3.1 x. what is the predicted value of y when x 2.5
If statistically significant, do you think the difference is large enough to be important?
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