Question

3. [-/5 Points] DETAILS ILLOWSKYINTROSTAT1 6.1.064.HW. The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean $\mu = 130$ and standard deviation $\sigma = 12$. (a) Calculate the $z$-scores for the male systolic blood pressures 105 and 155 millimeters. (Round your answers to two decimal places.) 105 mm $z = $ 155 mm $z = $ (b) If a male friend of yours said he thought his systolic blood pressure was 2.5 standard deviations below the mean, but that he believed his blood pressure was between 105 and 155 millimeters, what would you say to him? (Enter your numerical answer to the nearest whole number.) He is Select because 2.5 standard deviations below the mean would give him a blood pressure reading of millimeters, which is Select the range of 105 to 155 millimeters. 4. [-/1 Points] DETAILS ILLOWSKYINTROSTAT1 6.2.069.HW. The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.6 days and a standard deviation of 2.1 days. What is the 85th percentile for recovery times? (Round your answer to two decimal places.) days 5. [-/1 Points] DETAILS ILLOWSKYINTROSTAT1 6.2.072.HW. The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a standard deviation of 3 minutes. Sixty percent of the time, it takes more than how many minutes to find a parking space? (Round your answer to two decimal places.) min

          3. [-/5 Points]
DETAILS
ILLOWSKYINTROSTAT1 6.1.064.HW.
The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean $\mu = 130$ and standard deviation $\sigma = 12$.
(a) Calculate the $z$-scores for the male systolic blood pressures 105 and 155 millimeters. (Round your answers to two decimal places.)
105 mm  $z = $
155 mm  $z = $
(b) If a male friend of yours said he thought his systolic blood pressure was 2.5 standard deviations below the mean, but that he believed his blood pressure was between 105 and 155 millimeters, what would you say to him? (Enter your numerical answer to
the nearest whole number.)
He is  Select  because 2.5 standard deviations below the mean would give him a blood pressure reading of  millimeters, which is Select the range of 105 to 155 millimeters.
4. [-/1 Points]
DETAILS
ILLOWSKYINTROSTAT1 6.2.069.HW.
The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.6 days and a standard deviation of 2.1 days.
What is the 85th percentile for recovery times? (Round your answer to two decimal places.)
days
5. [-/1 Points]
DETAILS
ILLOWSKYINTROSTAT1 6.2.072.HW.
The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a standard deviation of 3 minutes.
Sixty percent of the time, it takes more than how many minutes to find a parking space? (Round your answer to two decimal places.)
min

3. [-/5 Points]
DETAILS
ILLOWSKYINTROSTAT1 6.1.064.HW.
The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean μ = 130 and standard deviation σ = 12.
(a) Calculate the z-scores for the male systolic blood pressures 105 and 155 millimeters. (Round your answers to two decimal places.)
105 mm z =
155 mm z =
(b) If a male friend of yours said he thought his systolic blood pressure was 2.5 standard deviations below the mean, but that he believed his blood pressure was between 105 and 155 millimeters, what would you say to him? (Enter your numerical answer to
the nearest whole number.)
He is Select because 2.5 standard deviations below the mean would give him a blood pressure reading of millimeters, which is Select the range of 105 to 155 millimeters.
4. [-/1 Points]
DETAILS
ILLOWSKYINTROSTAT1 6.2.069.HW.
The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.6 days and a standard deviation of 2.1 days.
What is the 85th percentile for recovery times? (Round your answer to two decimal places.)
days
5. [-/1 Points]
DETAILS
ILLOWSKYINTROSTAT1 6.2.072.HW.
The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a standard deviation of 3 minutes.
Sixty percent of the time, it takes more than how many minutes to find a parking space? (Round your answer to two decimal places.)
min

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