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The probabilities of the weather being fine, raining, or snowing are respectively 1/2, 1/3, and 1/6. The probabilities that a student arrives on time for school under each of these conditions is 3/4, 2/5, and 3/10 respectively. What is the probability that:
a. the student arrives at school on time on any given day;
b. if the student is late, it was raining?
State the null hypothesis H 0 and the alternative hypothesis H 1 that we would use for this test. Determining null and alternative hypotheses for the height of a plant.
Given the consumer is 18 to 24 years old, what is the probability that the consumer uses a plastic card? Given the consumer is over 24 years old, what is the probability that the consumer uses a plastic card?
question suppose that you observe the following service times in minutes by a bank teller 1 2 1 7 2 4.a. what is the
Assuming 250 of each sex, can we conclude that there is a significant difference in the proportions at a 0.05 level of significance?
Describe the methods for interpretation of categories (row or column) in CA. Can categories always be directly compared based on proximity in the perceptual map?
question wageweb.com exhibits salary data obtained from surveys. it provides compensation information on over 170
A mean of 2000 pounds and a variance of 2500 pounds. Let X be the mean of any sample of 100 ropes selected at random. find the expected value and the standard error of X.
Duracell Ltd claim that the life of their batteries in motorised soft toys is approximately normally distributed with a mean of 102.9 hours and a standard deviation of 16.5 hours.
Calculate the mean absolute deviation based on the 2-day moving average. You can have a forecast and an actual temperature.
Sampling variability refers to the idea that different samples will include different individuals
Which of the following is true about the random variables X, Y, and Z?
Samples t test and one that would require a dependent samples t test. And explain what they mean and why they are independent or dependent samples.
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