The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 308 days or longer. b. If the length of pregnancy is in the lowest 3%, then the baby is premature. Find the length that separates premature babies from those who are not premature.

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Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A:

Q: e monthly utility bills in a city are normally​ distributed, with a mean of ​$100   and a standard…

A: Given: Mean, μ=100 Standard deviation, σ=15 (a)  Probability that a randomly selected utility bill…

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A:

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A:

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A: Here, mean is $100 and standard deviation is $14.

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A: (a) Let x be the monthly utility bills in a city which follows normal distribution with mean 100,…

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A: Given  Mean, μ=85 pounds and standard deviation, σ=12 pounds

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A: GivenMean(μ)=57standard deviation(σ)=9.25

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A: Comments: Hi! Thank you for the question, As per the honor code, we are allowed to answer one…

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A: Note :-As per our policy, we can answer only three sub-parts, make a new request for other sub-parts…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.