Question of probability-normal distribution

Assignment Help Basic Statistics

Reference no: EM1392294

1. If we know that the length of time it takes a college student to find a parking spot in library parking lot follows a normal distribution with mean of 3.5 minutes and a standard deviation of 1 minute, determine the probability that a randomly selected college student will find a parking spot in the library parking lot in less than three minutes.

2. If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute, find the point in the distribution in which 75.8% of the college students exceed when trying to find a parking spot in the library parking lot.

3. The standard error of the mean

a) is never larger than the standard deviation of the population.

b) decreases as the sample size increases.

c) measures the variability of the mean from sample to sample.

d) All of the above.

Reference no: EM1392294

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