Question

1.For a standard normal distribution, find:
P(0.31 < z < 2.53) For this I got 0.616 and it was marked as incorrect so this is not the answer

2. For a standard normal distribution, find:
P(z < 1.9)

3.For a standard normal distribution, find:
P(z > -0.61)
Express the probability as a decimal rounded to 4 decimal places.

4. For a standard normal distribution, find:
P(z < c) = 0.7899
Find c rounded to two decimal places.

5. For a standard normal distribution, find:
P(z > c) = 0.1538
Find c rounded to two decimal places.

14. The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 39 liters, and standard deviation of 12.6 liters.

b. What is the probability that daily production is more than 16.6 liters? (Round your answer to 4 decimal places.)  Warning: Do not use the Z Normal Tables...they may not be accurate enough since WAMAP may look for more accuracy than comes from the table. (We were told to use Excel)

17. The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 118 and standard deviation of 16 .

Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher.

a. Around what percentage of adults in the USA have stage 2 high blood pressure? Give your answer rounded to two decimal places. __%

b. If you sampled 2000 people, how many would you expect to have BP> 160? Give your answer to the nearest person. Note: I had a bit of an issue encoding rounded answers, so try rounding both up and down if there's an issue! ___people
c. Stage 1 high BP is specified as systolic BP between 140 and 160. What percentage of adults in the US qualify for stage 1? ___%

d.. Your doctor tells you you are in the 30th percentile for blood pressure among US adults. What is your systolic BP? Round to 2 decimal places. ___lbs

Answer 1