Citrus rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. the mean monthly mileage over the years for citrus cars has been about 1500 miles per month.
recently, though, citrus purchased thousands of new cars, and the company claims that the average mileage of its cars is now less than in the past. to test this, a random sample of 17 recent mileages of citrus cars was taken. the mean of these 17 mileages was 1468 miles per month, and the standard deviation was 243 miles per month.
assume that the population of recent monthly mileages of citrus cars is normally distributed. at the 0.05 level of significance, can it be concluded that the mean recent monthly mileage, μ, of citrus cars is less than 1500 miles per month?
perform a one-tailed test. then fill in the table below.
the null hypothesis: h0:
the alternative hypothesis: h1:
the type of test statistic: (z, t, chi squre, or f)
the value of the test statistic (round to at least three decimal places):
the critical value at the 0.01 level of significance (round to at least three decimal places):
at the 0.05 level of significance, can it be concluded that the mean recent monthly mileage of citrus cars is less than 1500 miles per month? (yes/no)

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

its 50 miles away from the starting point

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock