Ex 10: According to a college survey, 22% of all students work full time. Find the mean and the standard deviation for the random variable X, the number of students who work full time in samples of size 16.

Q: Jordan spent 5 hours over the weekend studying for 3 tests.he spent an equal amount of time studying…

A: Given that Jordan spent on study = 5 hours                       for          = 3 TESTS

Q: A cleaning service company found that the operating costs increase at a rate of 24x - 10x thousand…

A:

Q: many calories did fred consume if he ate 6 pancakes

A: Given query is to find the calories consumed by Fred.

Q: The sum of n terms of a A.P. is -45 the first term is 2.5 and the common difference is -0.5. Find n

A: Given that the first term of A.P. is a=2.5 and the common difference is d=-0.5. Also, the sum of n…

Q: 1. The sum of two numbers is 25. One of the numbers exceeds the other by 9. Find the numbers.

A: Let x be a first number.  Then, the other number is = (x + 9) Given, the sum of two numbers is = 25…

Q: Five large letters should be spread out evenly across a banner. The banner is 14 feet wide. Each…

A: The objective of this question is to find out the space that should be between each pair of letters…

Q: he cost of a telephone call from Manila to Davao from 9 am to 5 pm is P24.00 for the first minute…

A: Given: The cost of a telephone call from Manila to Davao from 9 am to 5 pm is P24.00 for the first…

Q: 1 5. of Colin's money is $43 more than - of Daniel's. If the two boys have $821 altogether, how much…

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Q: Jona likes storing food in her mini-refrigirator. She has 18 solid foods - 4 apples, 6 chocolates,…

A: Solution: From the given information, there are 18 solid foods and 5 drinks. Solid foods include 4…

Q: It take 2 hours to travel 30 miles by bike . How long will it take to travel 105 miles

A: Given data is : It take 2 hours to travel 30 miles by bike. Speed of bike=distance travel by…

Q: y 25 15

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Q: Jose left a tuna sandwich in his locker. After 2 days there were 75 bacteria on it. After 5 days…

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Q: Michael, and John have a total of $111 in their wallets. John has 3 times what Latoya has. Latoya…

A: We have to find

Q: Ronald rents a car from Cheap Rent-a-Car for $25 plus $0.05 per mile. Dixon rents a car from Great…

A: Ronald rents a car from for $25 plus $0.05 per mile. Dixon rents a car for $40 plus $0.03 per mile.…

Q: A submarine desecends-3.5 per minute. How far will the submarine descend in 8 minutes How do you…

A: A submarine desecends-3.5 per minute. How far will the submarine descend in 8 minutes How do you…

Q: Solve for x. 25 A. * - 10 2x* M O

A: We have to find the value x

Q: Hakeem was given a large box of 54 chocolates for his birthday. If he eats exactly 3 chocolates each…

A: Given that,  Total number of chocolates =54 He eats 3 chocolates everyday How many chocolates would…

Q: Four sixths of 10 are equal to

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Q: |凸凸凸 Moza, Bilal, and Hareb have a total of $87 in their wallets. Moza has $9 more than Bilal. Hareb…

A: See the attachment

Q: Kate, Ron and Lisa play on the same soccer team. Kate has played 20 minutes in total. Ron has played…

A: Kate, Ron and Lisa play on the same soccer team. Kate has played  minutes in total. Ron has played…

Q: Suppose the elevation of a peak on a certain planet is 26,400 feet. A mile is 5280 feet. How many…

A:

Q: John and Julia are repainting the outside of their house. They each go out to buy paint. John buys…

A:

Q: Let x = 1 and then x = 2 in the equation x + 5 = x + 6. Iseither number a solution? How many…

A: Given :An equation x+5=x+6and given x=1,x=2

Q: Nine more than a number is 12

A: See this solution in below.

Q: We have selected the Garbage Processing Unit. The total time estimated to complete 3 trips to the…

A: Given that we have selected the Garbage processing Unit.  The total time estimated to complete 3…

Q: Solve it correctly how many 8 letter words can you make from the letters in the word PHILLIES

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Q: 3 2 X+2x +2х 2 3x-1

A:

Q: Joan can type 50 form letters in three hours. When Jill helps, they can do the job in one hour. How…

A:

Q: Tori rode her bike for 7 hours at 12 mph to get her van. She drove back at 42 mph. How long did the…

A: Tori ride her bike for 7 hours at 12mph and drove back at 42mph. Find the total time entire trip.