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STA1010 - Statistical methods for science - S2 2025
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Find the percent of a standard Normal model found in the given region:z < 1.90
The time to complete an on-line quiz for a randomly chosen student in a statistics class is a normal random variable with a mean of 45 minutes and a standard deviation of 10 minutes. What percent of the class will have finished the quiz by 60 minutes? State your answer, as a percentage, to only one(1) decimal place.
Cholesterol levels of adult women have a mean of 188 mg/dL with standard deviation of 24.
Vesna has a cholesterol level of 150 mg/dL.
Find her standardised cholesterol level, correct to TWO decimal places.
Find the percent of a standard Normal model found in the given region:z > 0.59
The lengths of human pregnancies can be described by a Normal model with a mean of 268 days and a standard deviation of 15 days.
What percentage can we expect for a pregnancy that will last at least 300 days?
In a standard Normal model, state what value(s) of z cuts off the described region:the highest 7%
The z-score above which 0.5% of a normally distributed population exists, z0.005 , is closest to
Pulse rates of adult men are approximately normal with a mean of 70 and a standard deviation of 8. Which choice correctly describes how to find the proportion of men that have a pulse rate greater than 78?