The average salary of male employees in a firm was $520 and that of females was $420. The mean salary of all the employees was 500. Find the percentage of male and female employees.

Q: Find the percentage of data points that lie between -2.31 and 1.85.

A: Assuming the data follows standard normal distribution with mean 0 and standard Deviation 1Finding…

Q: during what year were mean and median same value

A:

Q: The failure rate for taking the bar exam in Philadelphia is 41%.  If 375 people take the bar exam,…

A: Given that, The failure rate for taking the bar exam in Philadelphia is 41%  i.e. probability, p =…

Q: After 8 points are added to each score in a sample, the mean is found to be M = 40. What was the…

A: Let us have n number of scores in a sample. After adding 8 to each score sample mean will be M = 40…

Q: What is the difference between finding the Mean and Range?

A: Introduction:The mean is a measure of central tendency, whereas the range is a measure of…

Q: The data shows that the percentage 015

A: Given the data shows that the percentage of female cigarette smokers in a certain country declined…

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: In​ Lindsay's class, there were three students who scored 80 on a test and six students who scored…

A:

Q: The mean width of 12 iPads is 5.1 inches. The mean width of 8 Kindles is 4.8 inches. What is the…

A: The mean width of 12 iPads is 5.1 inches. and The mean width of 8 Kindles is 4.8 inches. What is the…

Q: The temperature for the last 5 days were: 75⁰F, 66⁰F, 80⁰F, 68⁰F and 73⁰F. What was the mean…

A:

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: In a distribution of scores, the mean is 12, the median is 8 and the mode is 4. Describe the shape…

A: A distribution is said to be positively skewed / right skewed if Mode > Median > Mean  and…

Q: what is the value of the mean and median if the data is normally distributed

A: We have given that the diagram percentage of Pigs vs weight in lbs.

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: 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: Yesterday Al recorded 5 data values, and the mean of those values was 90. Today he realized the data…

A: Given dataMean of 5 data values = 90Data value 80 was actually 50Mean is given by

Q: The median salary of the 1,264 teachers in a large public school district is $39,350. If the 66th…

A:

Q: Carl earned grades of 62, 78, and 89 on four math tests. What is the mean of his grades?

A: The grades earned by Carl are : 62, 78 and 89 The number of grades, n=3 To evaluate : The mean of…

Q: The mean GPA for 138 residents of the local apartment complex is 1.9. What is the best point…

A: Solution: From the given information, the mean GPA for 138 residents of the local apartment complex…

Q: Juan scored 10 points higer on his midterm and 47 points higher on his final than he did  on his…

A:

Q: Forty students took a final exam on which the passing score was 70. The mean score of those who…

A: Given that, forty students took a final exam on which the passing score was 70. The mean score of…

Q: What are the percentages of scores that fall between -1 and 0/0 and 1

A:

Q: The mean score of 10 students of an algebra class was 85. When two new students enrolled, the mean…

A:

Q: What percentage of scores are between scores 75 and 89?

A: By emperical rule  P(-1<Z<1)= 0.68 P(-2<Z<2)=0.95 P(-3<Z<3)= 0.

Q: The CEO of a coffee chain wants to determine whether people's income (measured on a ratio scale)…

A: The CEO of a coffee chain  want to determine whether people's income predicts their coffee…

Q: Explain the sample mean of the difference scores varies.

A:

Q: What percentage of scores are between scores 68 and 82?

A:

Q: find the mean if Z-score =14, st.Dev.=2.5, for a score of 8.5

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: In 2015, Gary earned $25,300. In 2016, he received a raise and earned $28,100. Comparing Gary’s…

A: follow next step

Q: For his statistics assignment, Johnson examined differences in quality of grades obtained by…

A: Johnson examined differences in quality of grades obtained by students on the regular program of a…

Q: Find the mean and median to revenue

A: These mean and median are summary statistics

Q: percentages:

A:

Q: In a survey, the median household income in a country was found to be £27000, and the mean household…

A: Given: Mean=53000Median=27000

Q: The mean score in statistics of 50 students in a class was 72 and that of the 15 girls was 65. Find…

A: Mean score in statistics of 50 students in a class was 72 and that of the 15 girls was 65.Find the…

Q: The mean salary for 24 factory workers is ₱12 000. How much will one additional salary of ₱37 000…

A:

Q: Give three numbers whose mean is 8, mode is 6 and median is 10 and range is 8.

A:

Q: How do the median number of video games owned compare for boys and girls?

A: We have to find median number of video games owned compare for boys and girls.

Q: According to the U.S. Department of Labor, the median annual salary in 2003 for a physical therapist…

A:

Q: Which player had the higher average points when compared to the other players on his team? O Fredo

A: Given information: The average points and standard deviations for the players Freda and Kari…

Q: The cighth grade girls' basketball team played a total of 13 games this season. If they scored a…

A:

Q: The mean score on a test is 75, the median score is 80, and the mode score is 85.  Pat got an 82.…

A: Given: The mean score on a test is 75, the median score is 80, and the mode score is 85.

Q: The median is closest to:

A: The discount rate set by bank for past 6 quarters are: Quarter Discount Rate 1 10.0%…

Q: The median salary of the 1,073 teachers in a large public school district is 38,850 dollars. If the…

A: From the given information, Total number of teachers =1073 Median salary of a teacher = $ 38,850…

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: How do you set up a percentage histogram and percentage polygon in Excel with a data set?

A: To create histogram, we enter the given data set in Excel sheet. Then we go to…

Q: The national profession exam for registered nurses, the NCLEX, has pass a rate of 85% for the first…

A: According to the given information in this question It follows binomial distribution with parameters…

Q: If the mean of 5 values equals 34, then ΣΧ-

A:

Q: After six biology tests, Ruben has a mean score of 72. What score does Ruben need on the next test…

A:

Q: Find the percentage of data that lies below -2.40, above 1.73, and between -2.40 and 1.73

A: Given data To Find the percentage of data that lies below -2.40, above 1.73, and between -2.40 and…

Q: Why would one use the median instead of the mean?

A: Mean: It is the sum of the observations divided by the total number of observations of the data set.…