Write the decimal as a fraction
2 answers:
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Answer:
There is evidence to show that the single-earner couples on average spend more time watching television together
Step-by-step explanation:
Given that a recent study compared the time spent together by single- and dual-earner couples. According to the records kept by the wives during the study, the mean amount of time spent together watching television among the single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples, the mean number of minutes spent watching television was 48.4 minutes, with a standard deviation of 18.1 minutes.
(Right tailed test where x stands for single earner and y for double)
Let us assume sample sizes are 500 each.
Difference -12.600
Standard error 1.066
95% CI -14.6913 to -10.5087
t-statistic -11.823
DF 998
Significance level P < 0.0001
Since p is less than alpha we reject null hypothesis.
There is evidence to show that the single-earner couples on average spend more time watching television together
Given:
The point is (-5,7).
To find:
The image of the given point after 90 degrees counter clockwise rotation.
Solution:
If a point rotated 90 degrees counter clockwise, then
Let the given point is P(-5,7). Using the above rule, we get
Therefore, the image of the given point after 90 degrees counter clockwise rotation is (-7,-5).