Probability that at least three of them will have part-time
A survey from Teenage Research Unlimited found that 30% of teenage consumers receive their spending money from part-time jobs. If five teenagers are selected at random, find the probability that at least three of them will have part-time jobs.
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College students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. If the amount of sleep is normally distributed, what proportion of college students sleep for more than 9.7 hours?
What is the expected number of guests that might turn up at your party, and its standard deviation? What ishe probability the number of guests is between 70 and 80?
Slot machines have three drums with the same number of positions on each drum. Each position contains a symbol. When you pull the lever on the machine, the drums spin.
1) You are sending out 60 invitations to a party.each person can bring a guest if they wish. Suppose it's equal probable that the invitee does not show up,shows up alone, or with a guest. (A) What is the expected number of guests that might show u
The test scores of a class consisting of 30 students are given in the table below. Perform the chi-square and the K-S tests on the data. Can the underlying distribution of the test score be accepted as normal at a 5% significance
A local environmental organization is interested in determining if the proportion of SUVs un SB has increased from the last years value of 10% to an alternative value closer to 15%. A saample of 400 cars passing through state street intersection w
Ocean fishing for billfish is very popular in the Cozumel region of Mexico. In the Cozumel region about 45% of strikes (while trolling) resulted in a catch. Suppose that on a given day a fleet of fishing boats got a total of 21 strikes. Find the f
A local environmental organization is interested determining if the proportion of red cars in a city has increased from last years value of 10% to a value closer to 15%. A sample of 400 cars were taken and 60 were red. state a null hypothesis H0 a
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Which of the following is a behavioral indicator related to Family? A) Developing school readiness and transition strategies B) Developing collaborative
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