What is the probability of a group of 4 having a score of at least 60 if the mean is 50 and SD is 8?
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Q: What is the probability of a group of 4 having a score of atleast 60 if the mean is 50 and SD is 8?
A: given data n = 4 μ = 50σ = 8P(x¯≥60) = ?
Q: Suppose 56% of politicians are lawyers. If a random sample of size 564 is selected, what is the…
A: From the provided information, 56% of politicians are lawyers that is p = 0.56 Sample size (n) = 546
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Q: Suppose 56% of politicians are lawyers. If a random sample of size 564 is selected, what is the…
A: Given: 56% of politicians are lawyers that is proportion (p) = 0.56 Sample size (n) = 564
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- In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the park 71 % of the time. Find the probability that among 11 guests surveyed exactly 3 guests like to stay at an overnight lodge in the park. P(x = 3) =For the experiment of rolling an ordinary pair of dice, find the probability that the sum will be less than 7 or greater than 11.Jenny works for a local brewing company. She and her team mates try to estimate the Hong Kong consumers’ preference on their beer brand compared to other imported ones. They performed a survey asking if the respondent prefers the company’s brand the most or not. Based on this survey result, they want to decide how much money the company needs to invest on brand promotions in the coming year. This is an important decision for the company, and the management wants to have the probability that the sample proportion p is +/- 3% from the actual proportion p to be very high (i.e., at least 99%). In this case, what is the desirable sample size n for the following two cases? Give the answer in the form of: at least ___ x100 samples. Case i. When the actual proportion is 50%. Case ii. When the actual proportion is 10%. Explain why the sample sizes required to achieve the same accuracy in the two cases are different.
- 2. In the class of Mr. Matic, the probability that a student likes both mathematics and science is 0.051. The probability that a student likes science is 0.17. What is the probability that a student likes mathematics given that he/she likes science?Q1. It is reported that the percentage of people in a small village that have health insurance is 80%. If 17 people are randomly selected, the find the following (a) The probability that 7 of them have health insurance. (b) The probability that at least 10 have health insurance.Suppose 49% of the registered voters in a country are Republican. If a sample of 701 voters is selected, what is the probability that the sample proportion of Republicans will differ from the population proportion by greater than 4%? Round your answer to four decimal places.
- A national sports equipment co-op is going to conduct a survey of its members. It knows from collecting data when members join that 68% of them identify as male. Assuming the total number of members is very large and 200 of them are randomly selected to take the survey, what’s the chance less than 60% of these randomly chosen members identify as male? Show all your work and write your answer as a percentage.You are playing Super Mario Bros together with 2 of your friends. You got to level 4, where you encounter your nemesis Bowser. Bowser is very strong, and he is defeated only 41% of the times. Each of you will play level 4 one time. Suppose that, after your friends are gone, you decide to play level 4 until you beat Bowser. Let Y be the number of times you play level What is the distribution of Y? What is the probability that you play less than 3 times? What is the expected number of times that you play? - for this answer I got 2.439 because I did E(y)=1/p = 1/0.41 = 2.439Suppose a basketball player makes 57.7% of shots and that the probabilty of making each shot is independent. If the basketball player attempts 3 shots, what is the probability of making at least one shot? Enter your answer rounded to at least 4 decimals.