In a study to compare the IQ between boys and girls in a particular elementary school, a random sample of seventh grade boys and girls was taken from Vancouver Hill Elementary School. The girls and boys were asked to take an IQ test and their scores were recorded. Some summary statistics of the IQs of the boys and girls is given below.   Gender Number of children measured Average IQ Standard deviations of IQ Boys 17 107.1 5.6 Girls 15 105.5 4.9 Based on the data provided, what is your estimate of this parameter? ______________

Q: Consider the following 10 exam scores: 28, 57, 58, 64, 69, 74, 79, 80, 83, and 85 Find the…

A: According to the provided information, the exam score is as follows: 28, 57, 58, 64, 69, 74, 79, 80,…

Q: The number of goals scored by a college soccer team for a given season are 4, 9, 0, 1, 3, 12, 3, 7,…

A: The population mean is, μ=∑xN=4+9+0+1+3+12+3+7+4+5+8+212=5812=4.8333 The population mean is 4.8333.

Q: he table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3…

A: The formula to find the mean is x=∑f·x∑f. Consider the following table. Test score (x) Frequency…

Q: Given the following set of data, determine the mean. 1, 2, 3, 4, 5, 4, 3, 2, 1, 0, 1

A: The given data is 1,2,3,4,5,4,3,2,1,0,1

Q: The highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A:

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9, 4, 7, 1, 4.

A: Considering the scores as population. The population mean is, μ=∑XN=9+4+7+1+45=255=5 Thus, the…

Q: If you have 100 people in your sample, what would be the degrees of freedom you use to calculate the…

A: Given, n=100 Degree of freedom(df)=?

Q: A researcher measures the number of hours college students spend on social media in a day. 10…

A: Given data: 2, 6, 5, 3, 3, 7, 5, 5, 6, 8

Q: The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3…

A: It is an important part of statistics . It is widely used . Mean is defined as the average . Median…

Q: Twenty-nine college students were polled and indicated their total cost of textbooks spent on the…

A: Given The data is as follows: 91, 472, 485, 238, 592, 394, 188, 341, 266, 199, 142, 273, 189, 130,…

Q: A college was conducting a phonaton to raise money to increase students’ scholarships. The president…

A: The observations of the amount pledged (in thousands of dollars) are as follows:16, 18, 11, 17, 13,…

Q: In a normally distributed data set with a mean of 24 and a standard deviation of 4.2, what…

A:

Q: a) Does this affect the average? If so, by how much? b) Does this affect the median? If so, by how…

A: An investigator has a computer file showing family incomes for 100 subjects in a certain study.…

Q: A researcher surveyed 10 undergraduate psychology majors about their study behaviors. The following…

A: Given that  The data are 6,5,3,4,9,7,3,7,8,3 Formula  Mean=(Sum of all observation)/(total number of…

Q: 58.6. Assume that 107 men and 244 women were sampled, and that the standard deviations were 24.3 for…

A: Given that, The Pew Internet and American Life Project surveyed 351 adults in 2019, asking them…

Q: developmental psychologist is interested in studying how long babies gaze at a photograph of a human…

A: Given data, 12, 15, 16, 20, 20, 27 Sort the data in ascending order. 12,15,16,20,20,27

Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…

A:

Q: The weight in pounds of a group of watermelons is given below: 6.3, 5.2, 7.8, 4.9, 8.1, 7.2, 5.8,…

A:

Q: A study was conducted to examine the impact of speaking in public on college students. A class of 15…

A: We have to use Paired t test.   Claim : The blood pressure increased because of speaking Let , μ1…

Q: Suppose you read in the newspaper that registered nurses earned an average annual salary of $49,110…

A: Claim :  salary was significantly lower than the $49,110.

Q: A randomly selected list of everyday food items was generated. Twenty-eight Grub Savers stores were…

A:

Q: Calculate Median, Q1, Q3 and IQR, sample mean, sample variance, and sample standard deviation for…

A: Given: data 48, 92, 47, 44, 94, 18, 95, 67, 74, 64

Q: Of the 500 people who took the civil servant acceptance test in one government agency, the average…

A: We have given that  Mean=67.5 Standard deviation=5.2  Find A) P(55.6<x<61)B) P(x>65)

Q: normal quantile plot?

A: Usually, the histogram of a normally distributed data will be bell-shaped. As the histogram is far…

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: The confidence interval is calculated using the combined value of sample statistic and the margin of…

Q: give the sample standard deviation of this data set: 20, 25, 35, 40

A: Sample Standard deviation:   If the standard deviation is calculated for sample then it is called as…

Q: In 2009, it was estimated that 63% of Americans supported the death penalty. In 2014, a Rasmussen…

A: sample size(n)=943 No. of Americans supported the death penalty(x)=536 population proportion=0.63

Q: Five cars of the same year and model were tested for gas mileage in highway driving and the results…

A: The data are X: 30,39,33,31,27

Q: The mayoral office surveyed the number of people who use each of the city's public shelters every…

A:

Q: Find standard deviation of each sampling distribution

A: here  given, According to a gallup survey of boys 77% of boys had played computer games in the past…

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: The sample size for population 1 is 16, sample mean is 47000 and sample standard deviation is 5200.…

Q: Please find the range, sample standard deviation, and interquartile range (IQR) of the following…

A: For the given data 23,30,30,31,35,37,48,55,72,96 Sample standard deviation =? IQR =?

Q: If a variable has a mean of 53, a median of 62, and a standard deviation of 4, What is its skewness?

A: The formula to find skewness is given below:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.