die (10-sided, with the numbers 1-10 on its faces) is rolled 450 times. Find the standard deviation for the number of "7s" that would be rolled.

Q: THE FF. WERE THE RESULTS OF THE EXAMINATION CONDUCTED FOR GRADUATING STUDENTS. FIND THE MEAN (USE 4…

A: The objective is to compute the mean for the given data.

Q: Calculate the mean percent of African American persons living below the poverty level. This will be…

A: Solution: The mean percent of African American persons living below the poverty level is required.…

Q: A very good professional baseball player gets a hit about 35% of the time over an entire season.…

A: Solution:- The commentator is wrong because the law of averages does not apply in this situation.…

Q: tudent obtained the mean of 58 observations as 48. It was later found that one observation was…

A: Given data, n=58 The mean for 58 observations is 48 x=∑xn48=∑x58∑x=2784

Q: Marcus rolls 2 number cubes, each numbered from 1 to 6. He rolled an even sum 16 times and an odd…

A: Given that  The Even sum is 16 times The Odd sum is 10 times  The relative frequency is the ratio of…

Q: A baseball player has a batting average of 0.313. what is the players expected number of hits in her…

A: Solution: Given data p = 0.313 n =19 To find : Expected number of hits in her next 19 times at bat?…

Q: The probability that a student in driving lesson will pass the written test for a non professional…

A:

Q: Find the probability of selecting someone who uses drugs. Round to 3 decimal places

A: Positive test resultsNegative test resultsSubjects uses drugs455Subjects does not uses drugs25480

Q: find the mean of the number of spots that appear when a die is tossed

A: It is asked to find  the mean of the number of spots that appear when a die is tossed. Explanation :…

Q: Friday night, the owner of Chez Pierre in downtown Chicago noted the amount spent for dinner for 28…

A: From the above data Count n=28 Mean   Mode : In the given data, the observation 95 occurs maximum…

Q: A football kicker makes 70% of his field goals. If he attempts 20 field goals, determine the mean…

A: Determine the mean number of field goals made by football kicker. From the information, given that a…

Q: x 0 1 2 3 4 P(x) 0.11 0.34 0.45 0.03 0.07

A:

Q: Find the margin of error for the given values of c, o, and n. c= 0.90, o = 3.6, n 64 Click the icon…

A: We have to find margin of error.

Q: Create a Scatterplot of y against percentage of Pell Grant recipients among freshmen.

A: The data for 2016 graduation rate and full-time undergraduate student to faculty ratio is given as-…

Q: Find the mean height per runner.

A: The heights of five runners are 160 cm, 137 cm, 149 cm, 153 cm and 161 cm respectively.

Q: Investigators evaluated the effect of education (E1=1 if college or more, E2=1 if Masters degree or…

A: The logistic regression model is given by:To find:The odds of having a job for someone with a…

Q: Find the probability of selecting either a non-smoker or a woman when you select a person at random…

A:

Q: Approximate x to three significant figures .

A: x=log 8.4 , b. log x=-2.4260 c. ln x=1.8

Q: For 120 consecutive days, a process engineer has measured the temperature of champagne bottles as…

A: Given, that the process engineer measured the temperature of champagne bottles for  consecutive…

Q: Compute for the average number of cellphones per household

A: Given: No. of cellphone (A) No. of household  (B) A time B 1 70 70 2 55 110 3 40 120 4 25…

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: Christopher is 6' (72") tall.  The population mean height for men in the United States is 5' 10"…

A: Let X be the height for men in inches.Here,X~N(70,32),i.e.,X~N(70,9).Let x be the value of…

Q: The plasma cholesterol level (mg/dL) for patients who have not been diagnosed with heart disease and…

A: We have to find out given probability..

Q: Psychology students at a university completed the Dental Anxiety Scale questionnaire. Scores on the…

A: Given that, mean = μ=12, and standard deviation =σ=3.5

Q: A couple plans to have 5 children. Assume that girl and boy births are equally likely. Find the…

A:

Q: Approximate x to three significant figures.

A: Consider the given value. logx=-2.2118 Now, find the value of x.…

Q: Give five different numbers whose mean is 11 and range is 14.

A: Here use basic formula of mean and range

Q: Oliver Queen is able to hit the bull's-eye (center of the target) 85% of the time. If he shoots 25…

A: Given n=25 p=0.85 q=1 - p=1-0.85=0.15

Q: Find the margin of error for the given values of c, o, and n. c = 0.95, o = 3.7, n= 49 Click the…

A: We have to find  margin of error.....

Q: 10 20 P(t) 50% 12% 38%

A:

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A: Given,mean(μ)=312P(X>319)=0.28