Question

In: Statistics and Probability

based on a poll, 60% of adults believe in reincarnation. assume that 8 adults are rabndomly...

based on a poll, 60% of adults believe in reincarnation. assume that 8 adults are rabndomly selected, and find the indicated probability.

a) what is the probability that exactly 7 if the selected adults believe in reincarnation?

b) what is the probability that all of the adults believe in reincarnation?

c) what is the probability that at least 4 adults believe in reincarnation?

THANK YOU

Expert Solution

Answer:

Given that:

Based on a poll, 60% of adults believe in reincarnation. assume that 8 adults are randomly selected, and find the indicated probability.

(a) what is the probability that exactly 7 if the selected adults believe in reincarnation?

The probability of believing in reincarnation, p=60% or 0.6.

The probability of non-believe, q=0.4.

The formula for binomial probability is given by,

b) what is the probability that all of the adults believe in reincarnation?

c) what is the probability that at least 4 adults believe in reincarnation?

orchestra answered 1 year ago

Based on a poll 60% of adults believe in reincarnation. Assume that 8 adults are randomly...

Based on a poll 60% of adults believe in reincarnation. Assume that 8 adults are randomly selected and find the indicated probability. a. What is the probablity that exactly 7 of the selected adults believe in reincarnation. The probablity that exactly 7 of the 8 adults believe in reincarnation is ? b. What is the probability that all of the selected adults believe in reincarnation? c. What is the probablity that at least 7 of the selected adults believe in...

Based on a poll, 40% of adults believe in reincarnation. Assume that 8 adults are randomly...

Based on a poll, 40% of adults believe in reincarnation. Assume that 8 adults are randomly selected, and find the indicated probability?

Based on a poll, 6060 % of adults believe in reincarnation. Assume that 66 adults are...

Based on a poll, 6060 % of adults believe in reincarnation. Assume that 66 adults are randomly selected, and find the indicated probability. Complete parts (a) through (d) below. a. What is the probability that exactly 55 of the selected adults believe in reincarnation?The probability that exactly 55 of the 66 adults believe in reincarnation is 0.1870.187. (Round to three decimal places as needed.) b. What is the probability that all of the selected adults believe in reincarnation? The probability...

Based on a poll, 50% of adults believe in reincarnation. Assume that 6 adults are randomly...

Based on a poll, 50% of adults believe in reincarnation. Assume that 6 adults are randomly selected, and find the indicated probability. Complete parts (a) through (d) below. A.What is the probability that exactly 5 of the selected adults believe in reincarnation? The probability that exactly 5 of the 6 adults believe in reincarnation is B. What is the probability that all of the selected adults believe in reincarnation? The probability that all of the selected adults believe in reincarnation...

Based on a Harris Interactive poll, 20% of adults believe in reincarnation. Assume that 6 adults...

Based on a Harris Interactive poll, 20% of adults believe in reincarnation. Assume that 6 adults are randomly selected. Determine each probability to 4 decimal places. A. Exactly 5 of the selected adults believe in reincarnation B. At least 5 of the randomly selected adults believe in reincarnation C. At most 5 of the randomly selected adults believe in reincarnation

Suppose that a recent poll found that 60% of adults believe that the overall state of...

Suppose that a recent poll found that 60% of adults believe that the overall state of moral values is poor. Complete parts (a) through (c). (a) For 400randomly selected adults, compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values is poor. The mean of X is ___ (Round to the nearest whole number as needed.) The standard deviation of X is _____ (Round to the...

In 2005, the Gallup Poll estimated that 32% of adults believe in ghosts. In a random...

In 2005, the Gallup Poll estimated that 32% of adults believe in ghosts. In a random sample of 200 young adults (ages 18-29), 38% said they believed in ghosts. Is this evidence that young adults are more likely to believe in ghosts? a. What is the population of interest? b. Describe p in words. c. Write the Hypotheses. d. Perform the test using a significance level of 0.10 ( = 0.10) ii. P-value Due to the different methods, I rounded...

Suppose that a recent poll found that 40 % of adults in a certain country believe...

Suppose that a recent poll found that 40 % of adults in a certain country believe that the overall state of moral values is poor. If a survey of a random sample of 15 adults in this country is conducted in which they are asked to disclose their feelings on the overall state of moral values, complete parts (a) through (e) below. (a) Find and interpret the probability that exactly 8 of those surveyed feel the state of morals is...

A poll found that 74% of a random sample of 1029 adults said that they believe...

A poll found that 74% of a random sample of 1029 adults said that they believe in ghosts. determine the margin of error

Assume that adults were randomly selected for a poll. They were asked if they "favor or...

Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos." Of those polled, 485 were in favor, 402 were opposed, and 125 were unsure. A politician claims that people don't really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin toss. Exclude the 125 subjects who said that they...