The mean number of hours of sleep that a college student gets per night is 6 hours with a standard deviation of 3 hours. A random twenty students is observed. It is of interest to determine the probability that the mean number of hours of sleep per night is less t Identify the correct formula for solving. P (X < 5) = P ( Z < (5-6) O P(X < 5) = P (z < ,º) (5-6) 3 O pR

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The mean number of hours of sleep that a college student gets per night is 6 hours with a standard deviation of 3 hours. A random sample of
twenty students is observed. It is of interest to determine the probability that the mean number of hours of sleep per night is less than 5 hours.
Identify the correct formula for solving.
(5–6)
P(X < 5) = P ( Z <
3
/20
O P(X <5) = P ( Z <
(5–6)
3
O P(X < 5) = P(z < "")
3
V20
®,®")
P(X < 5) = P ( Z < “,»)
O P(X <5) = P ( Z <
(5–6)
9.
(6,5)
3
P (X < 5) = P (Z <
(6–5)
3
V20
O <
(X < 5) = P (z
(5–6)
9
20
O None of the above / Unable to solve
Transcribed Image Text:The mean number of hours of sleep that a college student gets per night is 6 hours with a standard deviation of 3 hours. A random sample of twenty students is observed. It is of interest to determine the probability that the mean number of hours of sleep per night is less than 5 hours. Identify the correct formula for solving. (5–6) P(X < 5) = P ( Z < 3 /20 O P(X <5) = P ( Z < (5–6) 3 O P(X < 5) = P(z < "") 3 V20 ®,®") P(X < 5) = P ( Z < “,») O P(X <5) = P ( Z < (5–6) 9. (6,5) 3 P (X < 5) = P (Z < (6–5) 3 V20 O < (X < 5) = P (z (5–6) 9 20 O None of the above / Unable to solve
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