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Seventy percent of the bicycles sold by a certain store are mountain bikes. Among 100 randomly selected bike purchases, find the probabilities below. (Round all answers to four decimal places.)
(a) What is the approximate probability that at most 70 are mountain bikes?
(b) What is the approximate probability that between 60 and 70 (inclusive) are mountain bikes?
(c) What is the approximate probability that more than 75 are mountain bikes?
(d) What is the approximate probability that at most 30 are not mountain bikes?
Describe a simulation to estimate the probability of answering at least four of the ten questions correctly. carry out three repititons. estimate the probability
q1.nbsp grades for ten students are 88 93 83 97 73 88 85 59 73 and 79. determine the followinga. measures of central
Dunn Poitiac has compiled the following sales data regarding the number of cars sold over the past 60n selling days. Answer the following questions for the sales data shown.
The mean number of nonconforming coil springs in a batch is 5. Assume that the number of nonconforming springs in a batch, denoted as X, is a binomial random variable. What are n and p?
What is the appropriate procedure to test a significant difference in means between the two groups? Use the critical -value method.
Suppose that the mortgage payments of all homeowners have a normal distribution. What is the mean monthly mortgage paid by all homeowner?
What is the probability that the diameter of a single randomly chosen axle differs from the target value by 0.01 mm or more?
A random sample of 100 computers showed a mean of 115 gigabytes used with a standard deviation of 20 gigabytes. What is the standard error of the mean?
If a garage is robbed, what is the probability the doors were left open?
sixteen determinations of the ratio of iodine to silver in four different silver preparations were made with the
What is the questionnaire score that separates customers who are considered risk averse from those who are not? Carry your intermediate computations.
Remaining the same value. Estimate the probability at least two of the stocks increase in value. Estimate the probability at least two of the stocks increase in value.
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