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With reference to Exercise 24, use the large-sample confidence-interval formula of Exercise 19 to construct a 99% confidence interval for the standard deviation of the annual growth of the given kind of cactus
Exercise 24
A study of the annual growth of certain cacti showed that 64 of them, selected at random in a desert region, grew on the average 52.80 mm with a standard deviation of 4.5 mm. Construct a 99% confidence interval for the true average annual growth of the given kind of cactus.
Exercise 19
For large n, the sampling distribution of S is sometimes approximated with a normal distribution having the
The acceptance rate for applicants with similar qualifications is 30% for University X and 55% for University Y. What is the probability that Jim will be accepted by at least one of the two universities?
Assume that increasing and decreasing allergic reactions are equally likely if the training has no effect. Use alpha = .05
In order for Samuel's average calorie intake to equal a daily average of 2200 calories, how many calories of food must he consume on Thursday?
Do the data from this sample provide evidence for a significant increase in REM activity during exams? Use a one-tailed test with _ = .01. B.) Compute Cohen's d to estimate the size of the effect.
Assume the population standard deviation (s) is 0.5 and the sample size (n) is 100. Calculate the values for alpha, a type I error and beta, a type II error. (To calculate Beta, consider a mean that is 1 standard error away from the lower end valu..
Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.
a manufacturer of disk drives for notebook computers wants a mtbf of at least 50000 hours. recent test results for 15
Other group (drawing 6 slips without replacement from among 45). What is the probability that at least one of the shifts will be unrepresented in that sample of workers?
multiple choice question based on multiple regression.below you are given a partial minitab output based on a sample of
Reconsider the Kentucky Derby winning times and speeds from Exercise 9.20. Test whether there is any effect of the categorical factor "Track" (with seven categories) on winning speed, after accounting for year. The full model will have Year and th..
Each candy in a paper cup and then obtaining the weight without accounting for the weight of the cup. How can this as a random error and systematic error?
1. the comfort widget company makes several different sized widgets. the smallest widget the company manufactures
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