The following are grade point averages (GPAs) for a sample of students in a scholarship competition:...
The following are grade point averages (GPAs) for a sample of students in a scholarship competition: 3.6, 3.8, 3.6, 3.9, 2.6, 3.8, 3.8, 3.9.
a. Organize the data into a frequency distribution table.
b. Using this frequency distribution format, calculate the mean and
the standard deviation (using the direct method).
c. Is there something peculiar in this distribution? Adjust for it
by recalculating the statistics.
d. Comment on the differences betrveen the original statistics and
the adiusted statistics.
plz write the answers clear
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The following are grade point averages (GPAs) for a sample of
students in a scholarship competition:...
Provide an appropriate response. The grade point averages for 10 randomly selected students in a statistics...
Provide an appropriate response. The grade point averages for 10 randomly selected students in a statistics class with 125 students are listed below. What can you say about the mean score u of all 125 students? 3.6 2.6 2.0 2.1 2.7 3.4 2.9 1.9 3.9 3.7
The grade point averages (GPA) of 18 randomly selected college students are used to estimate the...
The grade point averages (GPA) of 18 randomly selected college students are used to estimate the mean GPA of the college students. The GPAs from the sample are as follows: 2.3 3.3 2.6 1.8 0.2 3.1 4.0 0.7 3.1 2.3 2.0 3.1 3.4 1.3 2.6 2.6 3.7 2.2 (5 points) Is it justified to use of the standard normal distribution to construct the confidence interval? Explain. (10 points) If the population is assumed to be normally distributed, construct a 98% confidence interval for the population mean GPA. Show your work in detail and use 3...
Sample grade point averages for ten male students and ton female students are listed. Find the...
Sample grade point averages for ten male students and ton female students are listed. Find the coofficient of variation for each of the two data sets. Then compare the results Males 26 35 3.8 3.9 27 25 Females 29 36 2.1 39 34 39 The coefficent of variation for males is 22.7% (Round to one decimal place as needed) The coefficent of variat on sor females is | |% (Round to one decimal place as needed) 36 33 1.9 3.9...
The following data are the monthly salaries y and the grade point averages x for students...
The following data are the monthly salaries y and the grade point averages x for students who obtained a bachelor's degree in business administration. GPA 2.6 3.4 3.6 3.1 3.4 3.1 Monthly Salary ($) 3,500 3,800 4,200 3,800 4,100 2,500 The estimated regression equation for these data is y 914.5 854.8x and MSE 360,484. a. Develop a point estimate of the starting salary for a student with a GPA of 3.0 (to 1 decimal). b. Develop a 95% confidence interval...
Name Economics 5 Ch 13 and 14 Practice Part 2 The following data are the monthly salaries y and the grade point averages x for students who obtained a bachelor's degree in business administration...
Name Economics 5 Ch 13 and 14 Practice Part 2 The following data are the monthly salaries y and the grade point averages x for students who obtained a bachelor's degree in business administration. answer key -Edited a Search Obser- GPA index xyi (x,-司 Salaryxi-Xyv-V) 0.36 3301.3 -348.7 121558.2 1.8 122500 100.043766.2116.2 13505.216627626.4 2500 0.16 3882.4 232.4 54022.8 117.6 13823.2122500 0.0 -150.0 22498.8 22500 0.09 3824.3174.3 30387.5 75.7 5727.5 62500 210 2.6 3300 0.6 350 1.3 3.4 3600 02 -50...
Provide an appropriate response. The grade point averages for 10 randomly selected students in a statistics class with 125 students are listed below. What can you say about the mean score u of all 125 students? 3.6 2.6 2.0 2.1 2.7 3.4 2.9 1.9 3.9 3.7
Sample grade point averages for ten male students and ton female students are listed. Find the coofficient of variation for each of the two data sets. Then compare the results Males 26 35 3.8 3.9 27 25 Females 29 36 2.1 39 34 39 The coefficent of variation for males is 22.7% (Round to one decimal place as needed) The coefficent of variat on sor females is | |% (Round to one decimal place as needed) 36 33 1.9 3.9...
The following data are the monthly salaries y and the grade point averages x for students who obtained a bachelor's degree in business administration. GPA 2.6 3.4 3.6 3.1 3.4 3.1 Monthly Salary ($) 3,500 3,800 4,200 3,800 4,100 2,500 The estimated regression equation for these data is y 914.5 854.8x and MSE 360,484. a. Develop a point estimate of the starting salary for a student with a GPA of 3.0 (to 1 decimal). b. Develop a 95% confidence interval...
Name Economics 5 Ch 13 and 14 Practice Part 2 The following data are the monthly salaries y and the grade point averages x for students who obtained a bachelor's degree in business administration. answer key -Edited a Search Obser- GPA index xyi (x,-司 Salaryxi-Xyv-V) 0.36 3301.3 -348.7 121558.2 1.8 122500 100.043766.2116.2 13505.216627626.4 2500 0.16 3882.4 232.4 54022.8 117.6 13823.2122500 0.0 -150.0 22498.8 22500 0.09 3824.3174.3 30387.5 75.7 5727.5 62500 210 2.6 3300 0.6 350 1.3 3.4 3600 02 -50...
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