PlS HELP ASP HURRY BEST ANSWER GETS TO PICK BRAINLESST OR FOLLOW!!!
2 answers:
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Answer:
See below for answers (in bold) and explanations
Step-by-step explanation:
<u>Part A</u>
According to the Empirical Rule, 99.7% of the data in a normal distribution are ±3σ standard deviations away from the mean. Hence, approximately 99.7% of women over seventy have blood pressures between 134-3σ = 134-3(7) = 134-21 = 113 mmHg and 134+3σ = 134+3(7) = 134+21 = 155 mmHg.
<u>Part B</u>
As 141-134=134-127=7, this represents ±1σ standard deviations away from the mean of 134 mmHg, which corresponds to 68% of the data by the Empirical Rule. Hence, approximately 68% of women over seventy have blood pressures between 127 mmHg and 141 mmHg
Answer:1.5625
Step-by-step explanation:
Given
mean
standard deviation
For bottles to be filled over 12 ounces i.e. area right to the bell curve for z score
and area left side of the z score is 1-0.1=0.9
so value close to 0.9 in standard normal curve which is 0.8997
z score corresponding to 0.8997 is 1.28
also z score for 12 ounce