Evidence suggests that 80% of UF students like turtles. Suppose we randomly sampled 10 UF students. Assume the binomial requirements are met. What is the probability 6 or fewer like turtles?
0.088
0.121
0.879
0.033
Evidence suggests that 80% of UF students like turtles. Suppose we randomly sampled 10 UF students....
Data collected by the Substance Abuse and Mental Health Services Administration (SAMSHA) suggests that 69.7% of 18-20 year olds consumed alcoholic beverages in 2008 (a) Suppose a random sample of 10, 18-20 year olds is taken. Is the use of binomial distribution appropriate for calculating the probability that exactly six consumed alcoholic beverages? (b) Calculate the probability that exactly 6 out of 10 randomly sampled 18-20 year olds consumed an alcoholic beverage? (c) What is the probability that at most...
Suppose 80% of all students use Snapchat. In a random sample of 10 students: What is the probability 8 of these students use Snapchat? What is the probability more than 6 of these students use Snapchat
5. In a math class consisting of 21 students, suppose that 10 of the enrolled students are rated as “very proficient" in math, according to a standardized test. (a) (4 points) Suppose 4 students in the class are randomly selected to form a group and work on a project. What is the probability that all of the students in the group are rated as very proficient in math? (b) (4 points) If 4 students in the class are randomly selected,...
2. Suppose that 10% of the general population is left-handed (a) We randomly sample 20 individuals. Find the probability that fewer than 2 of them are left handed. Hint: You cannot use the normal distribution (b) we randomly sample 200 individuals. Find the probability that less than 8% of them are left handed.
Suppose that we would like to create and interval estimate of the mean value of student’s score on a test. We have the following information about 10 randomly selected students, x⎯⎯=75, and s=9. Assume that the test scores for the population of the students are normally distributed. What critical points should we choose to compute a 90% confidence interval? a. ±z.05 b. ±z0.1 c. ±t10,.1 d. ±t9,.05 Weights of a newborn baby have a mean of 3000 grams and a...
Exercise 3. Suppose we would like to test the hypothesis that at least 10% of students suffer from allergies. We collect a random sample of 225 students and 21 of them suffer from allergies. (a) State the null and alternative hypotheses. (b) Obtain a test statistic and a p-value. (c) State the conclusion at the a = 0.05 level.
suppose that 50% of all college students smoke cigarettes. a sample of 12 is selected randomly. what is the probability that between 6 and 10 (both inclusive) students smoke? round your answer to four decimal places.
suppose the approval rating for a local politician is about 42%, and so we choose a small sample of 6 citizens randomly to learn more about why they are dissatisfied with the public servant. assume the local population is large enough that choosing an individual to complete the survey does not affect the probability of selecting a new citizen that supports the politician. what is the probability that 1or fewer citizens will say that they support the politician? a. 28.14%...
5) True or False: The diameters of 10 randomly selected bolts have a binomial distribution. A) True B) False 6) True or False: Suppose that a judge's decisions follow a binomial distribution and that his verdict is incorrect 10% of the time. In his next 10 decisions, the probability that he makes fewer than 2 incorrect verdicts is 0.736. A) True B) False SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 7)...
Suppose that the weight students gain in their first year of college is Normally distributed with a mean of 10 pounds and a standard deviation of 2 pounds. (a) What is the probability that a randomly selected student will gain between 6 and 8 pounds? (b) Suppose we pick 5 students at random. What is the probability at least one will gain between 6 and 8 pounds? (c) If 30 students are randomly selected, what is the probability that the...