represents the number of televisions in a household: x 0 1 2 3 P(x) 0.050.200.450.30 Find the standard deviation.(O

Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. The indicated IQ score is (Round to the nearest whole number as needed.) 0.2119 N X

The amount of potassium in food varies, but bananas are often associated with high potassium, with approximately 422 mg in a medium-sized banana.t Suppose the distribution of potassium in a banana is normally distributed, with mean equal to 422 mg and standard deviation equal to 19 mg per banana. You eat n = 8 bananas per day, and T is the total number of milligrams of potassium you receive from them. n USE SALT (a) Find the mean and standard deviation of T (in mg). (Round your standard deviation to four decimal places.) mean mg standard deviation mg (b) Find the probability that your total daily intake of potassium from the eight bananas will exceed 3,400 mg. (Round your answer to four decimal places.) You may need to use the appropriate appendix table to answer this question.

The heights (in inches) of 10adult males in an office are listed below. a. Find the standard deviation. Show the table (two columns) with all entries and the formula with appropriate entries. E(x-x)² S = 70 72 71 70 69 73 69 68 70 60 n-1

The percentage of vehicles on a freeway that violate the speed limit is π = 0.88 You randomly clock  n = 80  vehicles.   34 In the previous question, what is the standard deviation of the number of vehicles violating the speed limit?   a 2.761               b 2.907               c 3.060               d 3.221

Use the z-score formula, z=x−μ/σ, and the information below to find the mean, μ. Round your answer to one decimal place, if necessary. z=4.75, x=22.7, and σ=1.6σ

The discharge of suspended solids from a phosphate mine is normally distributed, with a mean daily discharge of 27 milligrams per liter (mg/l) and a standard deviation of 14 mg/l. On what proportion of days will the daily discharge exceed 60 mg/l? (Round your answer to four decimal places.) X USE SALT

Big Blossom Greenhouse was commissioned to develop an extra large rose for the Rose Bowl Parade.  A random sample of blossoms from Hybrid A bushes yielded the following diameters (in inches) for mature peak blooms.   2 in, 3 in, 3 in, 8 in, 10 in, 10 in

Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15 The area of the shaded region is (Round to four decimal places as needed) 96 G

# Solve for the mean, variance and standard deviation, write clearly so i can understand, and solve well