Answer:
Step-by-step explanation:
Cost of each part is
Cost of working one hour is
Let number of hours worked be and
number of parts bought be .
The maximum amount of money that John can spend is .
From the question we have
The required inequality is .
Answer:
3 days
Step-by-step explanation:
320-50 = 270
270/90 = 3
Answer:
The 95% confidence interval for the proportion of adolescents who tried smoking for the first time because of exposure to smoking in the movies is (0.37, 0.40).
Step-by-step explanation:
A confidence interval is an interval estimate of the population parameter. The confidence interval has a certain probability of consisting the true value of the parameter.
The (1 - <em>α</em>) % confidence interval for the population proportion (<em>p</em>) is given by:
The information provided is:
*Use a <em>z</em>-table for the critical value.
Construct the 95% confidence interval for the proportion of adolescents who tried smoking for the first time because of exposure to smoking in the movies as follows:
Thus, the 95% confidence interval for the proportion of adolescents who tried smoking for the first time because of exposure to smoking in the movies is (0.37, 0.40).
Answer:
It would be A
Step-by-step explanation:
1 yard = 3 feet
18 yards = ? feet
18 × 3 = 54
18 yards = 54 feet