Can you calculate the grades. The green ones are the grades got on each exam.

Q: In a math class, one of your 4 test scores is dropped. On the first three tests, you have the…

A: In a math class, one of your 4 test scores is dropped.  On the first three tests, you have the…

Q: On the semester final, Joe scored 80, Jill scored 89, and Bill scored a 94. What was the average…

A: We have to find out average score.

Q: You just took the GRE (in preparation for graduate school) and received a total score in the 98th Is…

A: Percentiles are used to measure position of a data.

Q: Maxine makes 5 keychains in 20 minutes. How long will it take her to make 8 keychains? (Hint: use a…

A: It is given that Maxine makes 5 keychains in 20 minutes. It is required to find how long it will…

Q: What percentage more than 1002 is 1503? The percentage is %. (Туре (Type an integer or a decimal.)

A:

Q: The mean of five positive numbers is 4.When another number is added, the mean becomes 8.Find the…

A: Here given that the mean of five positive numbers is 4. Therefore the total sum of numbers is…

Q: What percentage less than $125 is $25? The percentage is %. an integer or a decimal.) (Туpe

A: Given, $25 is x % less than $125  To Find: Required Percentage 'x'

Q: 7% of 69 is what percent of 100

A:

Q: The price of an item has been reduced by 45%. The original price was $15. Use the ALEKS calculator…

A: Given, The original price of the item = $ 15  Price is reduced by  45 % .  We have to find the price…

Q: What percent of 40 is 100?

A: Let x % of 40 is 100.

Q: Ray scored 75 marks for his first math test. His math score increased by 20% on his second math…

A:

Q: On three examinations, Ivana received 90.5,87 2, 80.7. What score does Ivana need in the fourth…

A:

Q: Raymond got an 85, 88, and 93 on his first three tests. What must he get on his fourth test so that…

A: Raymond got an 85, 88 and 93 on his first three tests. Suppose he scores x on his fourth test so…

Q: Against the Lady Huskies, the Lady Bears scored 79 points on 35 field goals (2- and 3-point goals).…

A:

Q: For your research project you will apply surveys to your classmates, if you know that the generation…

A: It is given that a researcher wants to apply the surveys to his classmates. He wants to generate…

Q: Ke Yi's average for her first 3 tests is 88. What must she score on her last test to bring her…

A: You must have the idea of average and how to find average of a set of numbers.

Q: Hasna got an average of 50 in 6 tests. What should she get in the next test to attain the average of…

A:

Q: To receive a B in a course, you must have an average of at least 80% but less than 90% on five…

A: Given that, to receive a B in a course ,must have an average of at least 80% but less than 90% on…

Q: The median of the five test scores is 82.  If four of the grades are 65, 93, 77, and 82, what can…

A: Given, Median of 5 scores=82 Four grades are 65,93,77,82 5th grade=?

Q: Jackie had a grade point average of 3.3 at the community college she attended. She then transferred…

A: Observe that the GPA is calculated as follows.

Q: 312 out of the 800 people at a real estate conference were women. What percentage of the people at…

A:

Q: A dog weighs 20% more than it did three months ago. It weighs 36 pounds now. How much did the dog…

A:

Q: In a class of 24 students, 23 exams are graded. The average for the class was 85. What would the…

A: Given, Class contain 24 in which 23 have already graded. The average of these 23 students was 85.

Q: Anne's scores in the last four tests were 85,82,97 and 91. What must be her score in the fifth and…

A: Average is the arithmetic mean of a non-empty list of numbers. It is a single representative of that…

Q: This morning, Tori took a history test. She got 80 out of 80 problems right. What percentage did…

A:

Q: There are 32 students in a class. Nine of those students are women. What percent are men? (round to…

A:

Q: In 1900, there was an Olympic underwater swimming event. The score was calculated by giving one…

A:

Q: Jim scored on his test. Tamika earned a 90% as the grade. 25 What is the difference in their percent…

A: Maximum marks of test= 25 Marks obtained by Jim= 20 Then, percent grade achieved by Jim is given by-…

Q: The difference of p and one-sixth is two-thirds

A: Given : The difference of p and one-sixth is two-thirds .

Q: What percentage more than 650 is 741? The percentage is %. (Type an integer or a decimal.)

A:

Q: Victoria took a test and got 80% of the questions right. She answered 20 questions correctly. How…

A:

Q: The Lady Mustangs played 42 games and lost only 4 of them. What percent of the games did they lose.…

A: Given, Number of games=42 Lost games=4 percent of Lost games=?

Q: Find the average if you got 100 on a test worth 20% of the course grade, 90 on a test worth 30% of…

A:

Q: ole of 12 step

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: I have a 79 percent in class. There is a final project worth 50 points. If I get a 50/50 what would…

A:

Q: clark is working on his field goal. last season he made 70 percent of the 80 field goals he kicked…

A: Given that clark is working on his field goal. last season he made 70 percent of the 80 field goals…

Q: Sally got 22 questions wrong on her quiz that had 40 questions on it. What is the percentage of the…

A:

Q: On three examinations, Elena received scores of 82, 91, and 76. What score does Elena need on the…

A: let Elena needs score X for her average score 85 we know that the average value formula average…

Q: What percent of 48 is 18?

A: Given: What percent of 48 is 18?

Q: 11. On their most recent math test, Jenny's score was 3 less than one half of Katie's score Ili…

A:

Q: ess than or equal to 3 or greater than or equal to 8

A:

Q: The temperature dropped 2*F every hour for 6 hours. What was the total number of degrees the…

A: We have given temperature dropped 2° F every hour for 6 hours.

Q: How did we get the numbers in the chart?

A: We have given that  There are 8 possible outcomes { MMM,MMH, MHM, MHH, HMM, HMH,HHM,HHH} And, we…

Q: As the blizzard got worse, the snow got harder and harder. Choose the correct answer below.

A: The rate of change of values of the function at a point is the value of the slope of the tangent of…

Q: what is the step to number 4?

A: 4) Given that, Consider that 95% of all sample means will fall between two values. That is,

Q: What percent of 40 is 7?

A:

Q: In a grade with 164 students, there were 18 more girls than boys. How many girls were in the grade?

A:

Q: The mean of 14 mini computers are 5.1 inches. What is the total width of the mini computers.

A:

Q: While at the Mall of America, Consumer Guide Report surveyed 500 people and asked them to list the…

A:

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.