A student scored 75% in a quiz worth 75 points, 85% in a quiz worth 50 points, and 80% in a quiz worth 30 points. What was the student's weighted mean score (in percentage)? Group of answers: 79.2 81.8 78.1 80.0

Q: In planing for his children to go back to school Susan buys several items at a discount. Five items…

A: Given information: Five items at $1.29 each, three at $1.49 each, six at $1.79 and nine at $0.99.…

Q: Sally just received her SAT results. Her SAT mathematics score was 600 and is in the 74th…

A: The score is 600 and it is the 74th percentile.

Q: find the weighted average. 3 test scores were 75, 5 test scores were 88 and 2 test scores were 90.

A: Given,3 test scores were 755 test scores were 882 test score were 90

Q: What is the range of the middle 50% of the data? The five number summary for the average annual…

A:

Q: In a survey 500 adults were interviewed, 150 said they had early medical checkup. Find the 95% for…

A: Givensample size(n)=500No.of adults said they had early medical checkup(x)=150p^=xn=150500=0.30

Q: What z value is associated with the fewest 59%? Select one: a. -0.23 b. 0.22 c. 2.22 d. 0.27 e.…

A:

Q: On a hockey team, there are 14 players. The captain of the team scored on the team, and less than…

A: Given : There are 14 players Captain of the team scored 35 goals last year, which is more than 10…

Q: 95 percent divided .025 what is the z score?

A: The z-score is obtained as given below: PZ≤z=0.025z=ϕ-10.025=-1.96  Using Standard normal table

Q: Four out of five students got As in math. What percent of students got As in math?

A: From the Percentages

Q: What is the average of  2.0, 32.0, 44.0, 14.5, 7.5 ?

A: For a set of n observations, x1, x2, ... , xn, mean or average is given by, This is measure of…

Q: The mean weight of 32 math students is 42.6 kg. If the students could all stand on the scale…

A: Given that ; The mean weight of 32 math students is 42.6 kg. If the students could all stand on the…

Q: A student gets 9 out of 15 problems correct on a homework assignment. What percent of the assignment…

A: The objective of this question is to find out the percentage of the assignment that the student got…

Q: Q2: Calculate the coefficient of variation percentage of the following samples reading:…

A:

Q: 31 of 48% is what?

A: 31 of 48%

Q: A telecommunications company conducted a survey about cell phone companies. Of 1800 randomly and…

A: given  x = 1275 preferred AT&T to Sprint n =Of 1800 randomly and independently selected people…

Q: The test score at the 25th percentile is 108. What is the test score at the 75th percentile?

A: Solution

Q: competed in an ironman race, J

A: Here it is given that - 3500 people competed in an ironman race, John finished 805th,

Q: What is the probability of the ball landing on 21 playing Roulette? Type your answer exactly like…

A: We have to find the probability of ball landing on 21 while playing Roulette

Q: Given : Find r12,.4 =.6 ľ13.4 =.5 23.4 =.7 r12.34 and r13.24

A:

Q: Sam received scores of 84,86,83,90 and 87 on five tests. Hola had scores of 90,75,94,68 and 98 on…

A: Now we apply the formula of getting average = Sum of all scores / Total matches playedSo average…

Q: Based on the Normal model for car speeds on an old town highway N(77, 9.1), what is the cutoff value…

A:

Q: There were 34 females that weighed over 250 pounds. What percent of females aged 20 to 29 weighed…

A: Given data,  N~(161.61,48.95)  i.e., μ=161.61σ=48.95   If n=34 P(X>250)=?

Q: What does it mean if the coefficient of determination is 78.2%?

A: coefficient of determination is a measure of proportion of variation in dependent variable Y…

Q: Which of the following lists contain EQUIVALENT values?   1/8, 0.125, 12.5%…

A: The objective of this question is to identify which of the given lists contain equivalent values.…

Q: On a multiple-choice test over English vocabulary, LaTosha got 35 out of 36 correct. What percent of…

A: The provided information is  on multiple-choice test over English vocabulary  LaTosha got 35 out of…

Q: Classwork

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Q: The Bangor Humane Society tracks cat adoptions closely. They sample 54 people who looked at cats…

A: Sample proportion = x/n Here x = 36 and n = 54

Q: A student completed an exam and their z score was -1.57. What percentage of students did better on…

A: We know that Z-score = (x - mu)/sigma  mu= 0 , sigma =1   X~N( 0,1)

Q: Results Real Estate had 6 home sales during the week: $150,000, $140,000, $240,000, $158,000,…

A:

Q: Mary is participating in a 6-day cress-country biking challenge. She biked for 60, 51, 62, 63, and…

A: According to the question, 60+51+62+63+54+x6=59                    x = 64