What proportion of students studied more than 4 hours?

Q: Kevin scored at the 70th percentile on a test given to 9920 students. How many students scored lower…

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Q: In what percent of their games would you expect the Dodgers to score more than 7.31 runs?

A: Given: Distribution of games is symmetric, unimodal and bell-shaped.

Q: What is the percentage of accuracy if the coefficient of determination egual to 0,56? *

A: Given that the coefficient of determination is 0.56. That is, the percentage of variation in the…

Q: Whose paint has a greater ratio of red to yellow?

A: comparing ratios red to yellow

Q: The hockey team won 8 out of their first 14 games. At the Same Rate, how many games should they…

A: We can find the answer as below.

Q: About 25% of the population watches the evening television news coverage as well as the soap operas.…

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Q: A bin contains 120 ears of white corn and yellow corn. Of these, 78 ears are yellow. What percent of…

A: We are given that a bin contains 120 ears of white corn and yellow corn. Of these, 78 ears are…

Q: seventeen percent of the plants in the greenhouse are broad leaf plants and the rest are grasses.…

A: Given, that there are broad leaf plants and grasses are in greenhouse, where 17% of the plants in…

Q: How many people from the community will die from the pandemic if the number of infections increases…

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Q: A coin rushes 10 times. What are the chances of 3 to 6 rounds?

A: The problem explains us that a coin rushes 10 ,now we have to calculate the chances of 3 to 6…

Q: Helga scored in the 70th percentile rank on an exam. If 300 students took the exam, how many…

A: Given: percentile rank of Helga: 70th           total number of students who took exam: 300 students…

Q: How to estimate the Difference Between Two Means?

A: Suppose we willing to estimate the difference in average of population 1 and population 2, that…

Q: Suppose r is .84, compute proportion of variation is explained?

A: From the given information, it is observed that r=0.84.

Q: A group of preschoolers has 8 boys and 24 girls. What is the percentage of girls to all children?

A:

Q: If a person’s z score equals -2.02, what is their percentile?

A: Given problem Given that   Given Person's z score =  -2.02 Using the Standard Normal Table ( Z Table…

Q: The area of Norway is 24% more than the area of Colorado, so Norway's area is what percentage of…

A: Let x be the area Colorado. The area of Norway is,

Q: Expressed as Percantage of selling price, which of the best selling menu items is the most costly to…

A: We have to answer question based on given table.

Q: A group of preschoolers has 15 boys and 12 girls. What is the ratio of girls to boys as a…

A: The group has, 15 boys and 12 girls. So, the ratio of girls to boys is, 12 : 15 = 4 : 5

Q: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. How…

A: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. It is…

Q: The last student surveyed was active for 25 minutes. What percent of students were more active than…

A: It is given that Min = 4, Median = 25 and maximum = 86

Q: 4. A farmer estimated that there were 25 gallons of water left in a tank. If this is an…

A:

Q: Forty percent of the 25 customer who came this morning are adults and the rest are teen. How many…

A: Given: 40% of 25 customers are adults.

Q: A management survey for a company surveyed 235 employees. 105 of the employees surveyed were…

A: Given, Number of employees= 235 Female employees= 105 Male employee % =?

Q: A new bridge reduced the normal 35-minutes travel time between two cities by 14 minutes. What…

A: Given information Original amount of time=35 minutes Reduce amount of time=14 minutes We have to…

Q: a. What percentage of adult men can fit through the door without bending?

A: Let , X be the height of men. Here , X→N(μ=67.1 , σ=3.6) Since , the door height is 56.2 in. Our aim…

Q: In a class of 10 students, James got 3rd position from the lowest. What is his percentile rank?

A: Given data: In a class of 10 students, James got 3rd position from the lowest. To find: What is his…

Q: Rene scored at the 84th percentile on a test given to a 12600 students . How many students scored…

A: Given percentile of Rene=84

Q: What percentage of the worker will finish this job within 30 minutes of the population mean? What…

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Q: From the side-by-side boxplots for the heart rate of males and females, do there seem to be any…

A: Box plot is used to  detect whether the outliers presented in the data (or) not and to compare the…

Q: of the population have high school scores less than 77?

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Q: If a person’s z score equals 2.08, what is their percentile?

A: Given info: The person’s z score equals 2.08.

Q: What percentage of the blocks are red?

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Q: What Percentage of deaths occurred after 2006?

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Q: City crimes records show that 20% of all crimes are violent and 80% are nonviolent. Ninety percent…

A: Given that, city crimes record shows that 20% of all crimes are violent and 80% are non violent.…

Q: 923 is what percentage of 1816 ? work the problem

A: This question can be solved using the concept of percentage.

Q: What percent of students who took the test have a score greater than 1300? If 5000 students took the…

A:

Q: NCAE shows that the average score of the students is 80 and sd is 15. What is the percentile rank of…

A: Given :     Mean (μ)=80Standard deviation (σ) = 15x=84

Q: What percent of tire treads will last between 26,000 and 32,000 miles?

A: Given data: The mean life is μ=30000 miles. The standard deviation is σ=2000 miles.

Q: What is the percentage of students weighing less than or equal too 203 pounds

A: Solution Given box plot tell us the five point summary of the data .

Q: In a survey at a local university 52% of students say that they less than the recommended eight…

A: The problem concerns working out the percentages and interpreting .

Q: For the  past month, 60 new cases of a disease were added to an existing 540 cases. If 2500 people…

A: New cases = 60  Existing cases = 540 Total Cases = 600

Q: The median age at first marriage of US Woman (26.1 years) is what percentage less than the median…

A: We have been given the median age of woman and men and we have to find median age of woman is what…

Q: how many classes are there and what is the class width? what is the what is the percentage of…

A: From the given frequency table find # classes = ? width =? x =# of hours played video game P(…

Q: Why are there more old animals in shelters than young ones?

A: The given question is why there are more old animals in shelters than young ones In larger animal…

Q: What percent of the phones have a battery life less than 5 or greater than 5.5 hours?

A: As per instruction we have to solve part c.

Q: A survey found that 31% of Americans watch the fireworks on the 4th of July from their TV. If 20…

A:

Q: A principal of a college wants to estimate the proportion of smokers among his students. What

A: Given : Margin of error, E = 10% = 0.10 Sample proportion = 0.30

Q: In a company, 22% of the workforce are in sales, 56% of the workforce are male and 65% of the…

A: Probability is defined as a number between 0 and 1 representing the likelihood of an event…

Q: Three-fourth of the students in the class have an average IQ of 120 and the rest have an average IQ…

A:

Q: Students surveyed boys and girls separately to determine which sport was enjoyed the most. After…

A: