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Assume that when adults with smartphones are randomly selected, 42% use them in meetings or classes. If 15 adult smartphone users are randomly selected, find the probability that exactly 10 of them use their smartphones in meetings or classes The probably Pound to four decimal places as needed)
Roberta wants to buy tickets for a raffle. The organizers say the chance of a ticket being a winner is 36%. She decides to buy 10 raffle tickets. Find the probability that all 10 of her raffle tickets turn out to be winners The probability of her getting 10 winning tickets is (round your answer CAREFULLY to 6 decimal places). Interpret this answer. Which of the following is true? OA She should not be surprised that her raffle tickets are all winners because the probability of that happening is very low OB. She should be surprised that her raffle tickets are all winners because the probability of that happening is very high OC. She should be surprised that her raffle tickets are all winners because the probability of that happening is very low OD. She should not be surprised that her raffle tickets are all winners because the probability of that happening is very high.
Assume that adults have 10 scores that are normally distributed with a mean of 103.2 and a standard deviation of 22 Find the probability that a randomly selected adult has an IQ greater than 140 1. (Hint: Draw graph) The probability that a randomly selected adult from this group has an 10 greater than 140 1 (Round to four decimal places as needed)
Find the area of the shaded region. The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation 1 The area of the shaded region is (Round to four decimal places c needed)
Find the area of the shaded region. The graph depicts the standand normal distribution of bone density scores with mean 0 and standard deviation 1 The area of the shaded regions (Round to four deceal places as needed) JO
Random guesses are made for the n multiple-choise questions on the math portion of the ACT test with the probability of a correct answer p. Use the given values of n and p to find the mean and standard deviation o n=220, p=0.7 p OF (Round to one decimal place as needed.) What is the expected number of correct answer on this test?
Assume that when adults with smartphones are randomly selected, 42% use them in meetings or classes. If 15 adult smartphone users are randomly selected, find the probability that exactly 10 of them use their smartphones in meetings or classes The probability is (Round to four decimal places as needed)
Roberta wants to buy tickets for a raffle. The organizers say the chance of a ticket being a winner is 36%. She decides to buy 10 raffle tickets. Find the probability that all 10 of her raffle tickets turn out to be winners. The probability of her getting 10 winning tickets is (round your answer CAREFULLY to 6 decimal places). Interpret this answer. Which of the following is true? OA. She should not be surprised that her raffle tickets are all winners because the probability of that happening is very low OB. She should be surprised that her raffle tickets are all winners because the probability of that happening is very high. OC. She should be surprised that her raffle tickets are all winners because the probability of that happening is very low OD. She should not be surprised that her raffle tickets are all winners because the probability of that happening is very high
Assume that aduts have 10 scores that are normally distributed with a mean of 103.2 and a standard deviation of 22. Find the probabany that a randonely selected adult has an IQ greater than 140 1. Hnt Draw a graph) The probability that a randomly selected adult from this group has an 10 greater than 140.1 (Round to four decimal places as needed.) CHIC
Find the area of the shaded region. The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation 1. The area of the shaded region is Round to four decimal places as needed.) C
Find the area of the shaded region. The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation 1. The area of the shaded region is (Round to four decimal places as needed) 2-3m
Find the indicated 2 soore. The graph depicts the standard normal distribution with mean 0 and standard deviation 1 The indicated score in (Round to two decimal places as needed) A GEFOR 880
Assume that a randomly selected subject is given a bone density test. Those test scores are nomaly distributed with a mean of 0 and a standard deviation of 1. Find the probably that a given score is less than 2.00 and draw a sketch of the region Sketch the region. Choose the corect graph below DA Q C The probability is (Round to four decimal places as needed) OB Oc a a C OD. A 2009
Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than -1.96 Skelch the region. Choose the corect graph belowe OA A 680 The probability is free OB Oc 4. 8 AⓇ