12. A sample size of 95 is drawn randomly from the population. Find the sum that is 1.4 standard deviations below the mean of the sums. (Round your answer to two decimal places.) B. The distribution of results from a cholesterol test has a mean of 180 and a standard deviation of 20. A sample size of 40 is drawn randomly. Find the sum that is 1.4 standard deviations below the mean of the sums. (Round your answer to two decimal places.) C. An unknown distribution has a mean 12 and a standard deviation of one. A sample size of 25 is taken. Let X = the object of interest. What is the mean of

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A: P(X<500)=Pz<500-540100=P(z<-0.4)=0.3446=34.46% Therefore the correct option is A option.

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Q: 1. The average test score of entire school is 78 with standard deviation 10. A teacher took a random…

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A: Given: Data set:88,73,91. n=3 Step 1: The sample mean is calculated as x¯=∑xin=88+73+913=84 Thus,…

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Q: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random…

A: Mean, X¯ = 70.1Standard deviation = 11.3Sample size, n = 135μ = 69

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Q: A simple random sample of 100 observations was taken from a large population. The sample mean and…

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A: Given Mean(μ)=60standard deviation(σ)=15