Which description of normal distributions is correct (select all that apply)? a. Normal distributions have a mean of zero and standard deviation of one. b. Normal distributions...

Which description of normal distributions is correct (select all that apply)? a. Normal distributions have a mean of zero and standard deviation of one. b. Normal distributions...

Consider a normal distribution with a mean of 12 and variance of 4. Approximately 82% of the area lies between which values? a. 6 and 13 b. 10 and 16 c. 9 and 15 d...

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Suppose a study finds that the wing lengths of houseflies are normally distributed with a mean of 4.55mm and a standard deviation of about 0.392mm. What is the probability that a randomly selected...

Background info: Flour price is based on weight, which is usually measured in kilograms. The flour seller has noted that the weights of the flour stocked by her supermarket are normally distributed...

The inside diameter of a manufactured cylinder is believed to follow a normal distribution centered at 5 inches with a standard deviation of .03 inches. The diameter of the cylinder must be within...

Solve for Z-value and find the area in table then Select: Add or subtract from 50%? 1. above 130 2. below 130 3. above 110

You are trying to create a normal distribution curve for a set of data, however due to an error, you are given the data chances from between a set number of points in the form... % chance...

Suppose birth weight is normally distributed with a mean of 7.5 pounds and a standard deviation of 1 pound. What is the probability that out of 5 randomly selected babies, exactly 4 of them are heavier...

1. Find the 5th percentile of the standard normal distribution 2. Find the 66th percentile for a normal distribution with mean -7, standard deviation 6 3. On a test the scores are...

1. Find the 5th percentile of the standard normal distribution 2. Find the 66th percentile for a normal distribution with mean -7, standard deviation 6 3. On a test the...

If X~N(10,3) and Y~N(15,8), and if X and Y are independent, what is the probability distribution of 1. X +Y 2. X-Y 3. 3X 4. 4X + 5Y If X and Y...

Mean x¯= 120, standard deviation is 25, find the area or percentage; solve for Z-value and find the area in table then Select: Add or subtract from 50%? a. above 130 b...

Mean x¯= 120, standard deviation is 25, find the area or percentage of: 1. 100 to 140 (note: there are two areas to be added) 2. 80 - 110 (two areas to be subtracted)

The average net sales / year of the products in 60 branches (N) of Ray. Cañero co. inc. is 85M (mean), With a standard deviation of 15M. 60 to 85M? 70 to 105M? 90 to 110M? Above 110M? Below 60M?...

Mean x¯= 120, standard deviation is 25, find the area or percentage of: 1. X = 100-120 2. 100 to 140 (note: there are two areas) 3. 80 - 110 (two areas to be subtracted)

An automobile manufacturer introduces a new model that averages 27 miles per gallon in the city. A person who plans to purchase one of these new cars wrote the manufacturer for the details of the...

Heights of adult women in the United States are normally distributed with a population mean of μ = 63.5 inches and a population standard deviation of σ = 2.5. A medical researcher is planning to select...

The Edmonton Rush is one of nine teams that play in the National Lacrosse League. The weights of the 2013 Edmonton players are shown. 160 170 170 ...

Mean x¯= 120, standard deviation is 25, find the area or percentage of: 1. X = 100-120 2. 100 to 140 (note: there are two areas to be added) 3. 80 - 110 (two areas to be subtracted)

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