The injury rate of a volleyball player is 20%. If he throws the ball 100 times, and if you know that P (Z< 2.04) = 0.9793 P (Z < 2) = 0.9544 ,P(Z > 2.5) =9938 , What is the probability of scoring less than 30 ?
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- A textile manufacturing process finds that on average, three flaws occur per every 50 yards of material produced. What is the probability that exactly 2 flaws occur in a 50 yard piece of material? Round your answer to three decimal places with a zero to the left of the decimal. E.g., 12% would be 0.120, and 0.15551 would be 0.156.The chances of a pine tree in a particular forest being effected by the pine beetle is 10 percent. If you randomly select 20 trees for testing, what is the probability that fewer than 2 will be infected by the pine beetle? Round your answer to three decimal places, e.g. 0.619.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) =
- A mobile phone brand has a mean time of failure that equals to 1000 days. What is the probability that a phone from this brand lives less than 500 days? (Note: write the probability as an integer or as a percentile without the % sign)In a Calculus class, the final exam scores were normally distributed with a mean of 63 and a standard deviation of 5. If you are randomly selected, what is the probability that you will score more than 65 on the exam? Identify the type of probability distribution shown in the problem Identify the given in the problem and solve for the probability.You flip a fair coin 10 times. What is the probability that you flip all tails? Answers should be percentages correct to five decimal places.
- The probability that a student passes APPDA is 2/3, and the probability that she passes Research Methods is 4/9. If the probability of passing at least one course is 4/5, what is the probability that she will pass both courses ? Final answer in % and 2 decimal places.In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the park 66 % of the time. Find the probability that among 7 guests surveyed exactly 5 guests like to stay at an overnight lodge in the park.P(x = 5)A certain disease has an incidence rate of 0.7%. If the false negative rate is 8% and the false positive rate is 4%, compute the probability that a person who tests positive actually has the disease.
- If P(E)=0.89, find the odds in favor of E. What are the odds in favor of E?34% of CSU students participate in the Statistics Games while they attend CSU. You take a random sample of 40 students. What is the probability of getting a a sample with more than 15 students who have participated in the Games? Use 2 decimal places for your z-score when finding the probability area. Give your answer to 4 decimal places.A population proportion is 0.58. Suppose a random sample of 658 items is sampled randomly from this population. what is the probability that the sample proportion is between 0.53 and 0.56? What is the probability that the sample proportion is less than 0.49?