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For each of the following situations, assume that X is a binomial random variable with the specified n and p, and find the requested probability.
a. n = 10, p = .3, P(X ≤ 3).
b. n = 5, p = .1, P(X = 0).
c. n = 5, p = .1, P(X ≥ 1).
A researcher would like to evaluate the relationship between a person's age and their preference between two leading cola brands.
a consulting engineer receives on average 0.7 requests per week. if the number of requests follows a poisson process
A ratings service would like to know, within 5 percentage points and with 95% confidence, the percentage of these households who tune in to the first episode of a network miniseries. How many television households must be included in the sample?
Judy warned you in her statistics class that you would never be the same after taking that class. You find yourself thinking...If 40 mechanics are randomly selected, what is the probability that their mean rebuild time exceeds 8.1 hours?
For a local charity, the donations in dollars received during the last month were 5, 10, 15, 20, 25, 50 having the frequencies 20, 30, 10, 40, 50, 5. Compute the mean, variance and standard deviation.
a doctor wants to estimate the hdl cholesterol of all 20-to 29- year-old females. how many sunjects are needed to
a load cell is used to take repeated measurements of the force produced by a hydraulic cylinder. the load cell has an
Assuming that the relationship between year tt and cost cc is linear, develop a formula for predicting the average cost of a compact car in the future measuring the variable tt as years since 2000. Be sure to use the lower case variables tt and cc..
Brand preference. In ,l small-scale experimental study of the relation between degree of brand liking (Y) and moisture content (XI) and sweetness (X2 ) of the product, the following results were obtained from the experiment based on a completely ..
How many different combinations are possible if 6 substitute workers are available to fill 3 openings created by employees planning to take vacation leave next week?
do males and females differ in the amounts they spend on valentines day? the average expenditure in a sample of 40 male
Use the appropriate descriptive statistics from W2: Assignment 2. Assuming that the sample statistics you computed are exactly equivalent to the corresponding population parameters, identify the following
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