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Problem: A bin contains 3 different types of disposable flashlights. The probability that a type 1 flashlight will give over 100 hours of use is 0.8, with the corresponding probabilities for type 2 and 3 flashlight being 0.5 and 0.4, respectively. Suppose that 50 percent of the flashlight in the bin is type 1, 30 percent are type 2, and 20 percent are type 3.
a. What is the probability that a randomly chosen flashlight will give more than 100 hours of use?
b. Given that a flashlight lasted over 100 hours, what is the conditional probability that it was a type 1 flashlight?
The midpoint for each class (enter in table above): Calculate the estimated arithmetic mean of the sample Calculate the estimated arithmetic median of the sample
1. a severe drought affected several western states for 3 years. a christmas tree farmer is worried about the droughts
Considering a newly arriving customer to the checkout line. what is the probability that this customer will not have to wait behind anyone.
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verify that the function fx 3414x x 0 1 2... is a probability mass function. determine the requested probabilitiesa
A random sample of 72 statistics students was taken to estimate the proportion of students who are also in the Math Club. The 90% confidence interval was 0.438 to 0.642. Using this information, what sample size would be necessary to estimate the t..
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The mean pulse rate for males. Define the null and alternative hypothesis. SD= 18.48 pulse rate for males 25.07 women.
probability of 0.31 that it is dominant. There is also a probability of 0.22 that a gene is type B and it is dominant. What is the probability that a gene is of type A?
greta and troy are playing chess. greta is a poor sport and will stop playing as soon as she loses 3 chess matches.
question 1 a continuous random variable y has py gt 10 0.16 and p5 le y le 10 0.15. finda py lt 10b py lt 5c py
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