subject
Mathematics, 25.03.2020 05:38 zoolo1

In 1955, Life Magazine reported that the 25 year-old mother of three worked, on average, an 80 hour week. Recently, many groups have been studying whether or not the women's movement has, in fact, resulted in an increase in the average work week for women (combining employment and at-home work). Suppose a study was done to determine if the mean work week has increased. 81 women were surveyed with the following results. The sample mean was 83; the sample standard deviation was ten. Does it appear that the mean work week has increased for women at the 5% level

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 22:30
9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?
Answers: 1
question
Mathematics, 22.06.2019 00:00
Iwill arward ! , i if bt ≅ eu , bu ≅ et , prove: ∠b ≅ ∠e. fill in the blanks: draw segment ut ≅ bt≅ bu ≅ △ubt ≅ △
Answers: 1
question
Mathematics, 22.06.2019 00:40
Use the distributive property -7(-2x+u-2)
Answers: 2
question
Mathematics, 22.06.2019 01:50
Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.
Answers: 1
You know the right answer?
In 1955, Life Magazine reported that the 25 year-old mother of three worked, on average, an 80 hour...
Questions