Mathematics, 17.12.2021 23:00 zeesharpe05
Sample annual salaries (in thousands of dollars) for employees at a company are listed. 44 33 49 50 41 41 44 33 49 34 50 44 54
(a) Find the sample mean and sample standard deviation.
(b) Each employee in the sample is given a $3000 raise. Find the sample mean and sample standard deviation for the revised data set.
(c) Each employee in the sample takes a pay cut of $4000 from their original salary. Find the sample mean and the sample standard deviation for the revised data set.
(d) What can you conclude from the results of (a), (b), and (c)?
Solve this:
(a) The sample mean is x= thousand dollars.
(Round to one decimal place as needed.)
The sample standard deviation is s= thousand dollars.
(Round to one decimal place as needed.)
(b) The sample mean is x= thousand dollars.
(Round to one decimal place as needed.)
The sample standard deviation is s= thousand dollars.
(Round to one decimal place as needed.)
(c) The sample mean x= thousand dollars.
(Round to one decimal place as needed.)
The sample standard deviation is s= thousand dollars.
(Round to one decimal place as needed.)
(d) What can you conclude from the results of (a), (b), and (c)?
A. When a constant k is added to or subtracted from each entry, the new sample mean is x+k or x−k, respectively, and the sample standard deviation remains unaffected.
B. When a constant k is added to or subtracted from each entry, the new sample mean is x+k or x−k, respectively, and the new sample standard deviation is s•k
C. When a constant k is added to or subtracted from each entry, the sample mean is unaffected, and the new sample standard deviation is s+k or s−k, respectively
D. When a constant k is added to or subtracted from each entry, the new sample mean is x+k or x−k, respectively, and the new sample standard deviation is s+k.
Answers: 2
Mathematics, 21.06.2019 23:30
Hundred and tens tables to make 430 in five different ways
Answers: 1
Mathematics, 22.06.2019 02:00
Masons cell phone company charges $0.12 for every text message he sends plus $2.50 per month if mason sent 25 messages this month how much money does he owe the one with the correct answer and explanation gets 10 points and is marked as the brainliest answer
Answers: 1
Mathematics, 22.06.2019 03:30
Eiko is wearing a magic ring that increases the power of her healing spell by 30%. without the ring, her healing spell restores h health points. which of the following expressions could represent how many health points the spell restores when eiko is wearing the magic ring?
Answers: 3
Sample annual salaries (in thousands of dollars) for employees at a company are listed. 44 33 49 50...
History, 05.05.2020 04:31
English, 05.05.2020 04:31
Mathematics, 05.05.2020 04:31
Law, 05.05.2020 04:31
Chemistry, 05.05.2020 04:31
Mathematics, 05.05.2020 04:31
Mathematics, 05.05.2020 04:31
Mathematics, 05.05.2020 04:31
Mathematics, 05.05.2020 04:32