Question

  

A company publishes statistics concerning car quality. The initial quality score measures the number of problems per new car sold. For one year and car had 1.27 problems per car. Let the random variable X be equal to the number of problems with a newly purchased model A car. Complete A and B.

A. Probability of 0 problems

B. Probability of 2 or fewer problems.

Give a normal distribution with u(mean)=50 and O(standard deviation) = 4 complete A through D.

A. Probability X is > 43

B. Probability X is <42

C. For this distribution, 7% are less than what X value.

D. Between what two X values(symmetricaly distributed around the mean) are 60% of the values

The annual per capita consumption of bottled water is 33.7 gallons. Assume normal distribution with a mean of 33.7 and a standard deviation of 10 gallons.

A. Probability someone consumed more than 44 Gallons.

B. Probability someone consumed between 25 and 35 gallons of bottled water

C. Probability someone consumed less than 25 gallons

D. 97.5% of people consumed less than blank gallons.

One year consumers spent an average of 22$ on a meal at a resteraunts. Assume that the amount spent on a restaurant meal is normally distributed and that the standard deviation is $6. Complete a through c.

A. Probability that r

Randomly selected person spent more than $24

B. Probability that person spent between $9 and $17.

C. Between what 2 values will the middle 95% of the amounts of cash spent fall. 

For restaurant meal question

Aikira needs 475 points to receive a black belt rating in class. She has already earned 319 points and gets 3 points for each ticket she receives. How many tickets does she need to become a black belt. I got 156. But the problem says write an equation. The variable term: add or subtract: The constant term added to/subtracted from the variable term; The constant term by itself: The final equation: Variable: B. Solve and show work

Iggi is practicing for a marathon by running laps on the track at school, each lap covers 0.7 kilometers and he has already run 19.6 kilometers. How many laps does he need to run if he want to complete 91 kilometers? The variable term: Add or subtract: The constant term added or subtracted from the variable term: The constant term by itself: The final equation: Variable: B. Show equation and work.