Answer:
c) t-test of population mean
Explanation:
The t-test statistic is used in hypothesis testing. Here we would use a one sample t test to test our hypothesis. The one sample t test measures the statistical difference between the hypothesized mean and the sample mean. In a one sample t test or single sample t test, a test variable is measured against a test value.
Example we compare our test variable to the hypothesized mean value $75 above.
The t test is used instead of z score when standard deviation is unknown.
Using the t test, we either accept or reject the null hypothesis given alternative hypothesis.
Answer: 3 minutes
Step-by-step explanation:
it increased by 3 minutes everyday starting from 3, 6, and then finally 9.
3(x+5)=7-x3x+15=7-x4x=-8x=-2
point-slope equation - y+3= -3/5( x+5)
slope-intercept form- y= -3/5x +b
