Show your solutions and draw the curves for the word problems. II. Word Problems. 2. The average test scores of students in NSTP class were 70 with a standard deviation of 8. There are 500 students in this class. Use the positive and negative z-score table to answer the following questions. a. What is the probability of randomly selecting students with a score of less than 65? b. How many students scored above 85? c. The middle 50% of test scores fall between what two points?

Q: Find the joint cdf

A:

Q: In a survey of 143 pet owners, 86 said they own a dog, and 55 said they own a cat. 42 said they own…

A: The total pet owners is n = 143.

Q: There are five major auto routes from Boston to Detroit, and six from Detroit to Los Angeles.How…

A: We can find the total number of major auto routes from Boston to Los Angeles via Detroit by…

Q: Denise's city took a telephone poll about a plan to build a new hotel downtown. 900 people took the…

A: Given,no.of people=900The percentage of people who are favor of the new hotel=3%

Q: median from 87,90,87,98,80,67,78

A: Median: Median is the middle most value of a set of observations.

Q: In a survey of 81 pet owners, 26 said they own a dog, and 37 said they own a cat. 13 said they own…

A:

Q: Last year, Faith came in 2nd place in her school's Spelling Bee. This year, she plans to win 1st…

A:

Q: s^2 for 4, 13, 25, 31, 37

A: It is assumed that the question is to find the sample variance for the given data. Here, the sample…

Q: A college accepted 17 more transfer students last year that second college. Combined,  two schools…

A: A college accepted 17 more transfer students last year than second college. Combined they accepted…

Q: The differece between aa two digit number and that number reversed is 18 what can the number be?…

A:

Q: Estimate the sum of 448 and 382

A:

Q: hundredet

A: We have already obtained the principal value .We have to find the answer round to the nearest…

Q: 3 Tina is dividing 488 by 4. She is using these 4 hundreds, 8 tens, and 8 ones blocks. How should…

A: We have to divide 488 by 4 We have 4 hundreds, 8 tens, 8 ones. So, we divide all these into equal…

Q: In a survey of 114 pet owners, 70 said they own a dog, and 15 said they own a cat. 11 said they own…

A: Given Information: In a survey of 114 pet owners. 70 said they own a dog 15 said they own a cat 11…

Q: The ages of the members of a family who got together for a birthday celebration were 45, 33, 90, 49,…

A: The data are 45, 33, 90, 49, 91, and 14.

Q: In a survey of 164 pet owners, 53 said they own a dog, and 93 said they own a cat. 27 said they own…

A: Let A - people who own dogs B- people who own cats U- denote for total people surveyed Total number…

Q: Find median  16,17,35,36,48,39,40

A: Given data: 16,17,35,36,48,39,40 Total number of observations, n=7

Q: Kendrick's town had an election last month. 86% of the 9,450 people in the town voted in the…

A: Given86% of the 9450 people in the town voted in the election

Q: In a survey of 161 pet owners, 91 said they own a dog, and 32 said they own a cat. 4 said they own…

A: The total number of pet owners is n = 161.

Q: 7* 49

A: Here is the solution

Q: 107 55 #3

A:

Q: 5dt 1 46 50 44 40 4

A:

Q: mirs little passed out 28 calculators. She placed the same number of calculatoes on 7 tables. How…

A:

Q: In a city of 45,000 homes, a survey was taken to determine the number with Wi-Fi access. Of the 500…

A: Here in a city there are 45000 homes  i.e. N = 45000 500 homes are surveyed, 300 had wifi access…

Q: Take away 7 sets of 8 from 9 tens

A: Concept: Subtraction: The act of subtracting one number from another is called subtraction. The way…

Q: 5,239 + 2,794=

A: see below the answer here nothing to explain it

Q: 233 divied by 93

A: