1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shtirl [24]
3 years ago
9

A rental car company claims the mean time to rent a car on their website is 60 seconds with a standard deviation of 22 seconds.

A random sample 36 customers attempted to rent a car on the website. The mean time to rent was 55 seconds. Is this enough evidence to say that the mean time is less than the company's claim? Consider α=0.05.
Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0

Answer:

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

Step-by-step explanation:

State the null hypothesis

H0: u = 60against the claim

Ha u≠   60   (this is a two tailed test)

Sample size n= 36

Sample mean=X`= 55

Population mean = u= 60

The significance level α = 0.05

Standard deviation= Sd = 22 seconds

Z= X`- u / Sd /√n

Z= 55- 60 / 22/√6

z= - 5/22/6

Z= -1.3635

The value of z from the table is Z∝/2= ±1.96

The critical region is less than - 1.96 and greater than 1.96.

Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds

You might be interested in
Solve and reduce to lowest terms: x =<br> Please don't make it to long
dusya [7]

Answer:

2/11

Step-by-step explanation:

6 = 2 x 3

6/11 x 1/3

= ( 6 x 1 )/( 11 x 3 )

= ( 2 x 3 x 1 )/( 11 x 3 )

Cancel 3 in both numerator and denominator.

= ( 2 x 1 )/( 11 )

= 2/11

4 0
2 years ago
The area of a square flowerbed is 1.21 square yards. What is the length of each side?
gregori [183]

Step-by-step explanation:

area of a square=a*a=a^2

1.21=a^2

a=√1.21

a=1.1yards

6 0
3 years ago
2 cups of milk on 1/2 a quart of milk how many cups 1 quart of milk?
Wewaii [24]

Answer:

4 cups

Step-by-step explanation:

because if you have 2 cups for a half a quart then add another half which means add 2 more cups 2+2=4 cups

4 0
3 years ago
Joe spends 18.75% of his working day washing cars. He spends 1.5 hours washing cars. How many total hours does he work per day?
insens350 [35]

Answer:

8 hours

Step-by-step explanation:

Joe spends 18.75% of his working day washing cars.

Joe spends 1.5 hours washing car.

Therefore 18.75% is equal to 1.5 hour.

18.75% = 1.5 hour

1% = 1.5 ÷ 18.75 = 0.08 hour

100% = 0.08 x 100 = 8 hours

4 0
3 years ago
in a cookie jar,1/5 of the cookies are chocolate chip and 1/2 of the rest are peanut butter.What fraction of all the cookies is
Tamiku [17]
If 1/5 are chocolate chip, then 4/5 are not chocolate chip because 1 - 1/5 = 4/5.

Half of 4/5 are peanut butter. Half of 4/5 is 2/5, so 2/5 of the cookies are peanut butter.
3 0
3 years ago
Other questions:
  • If one row in an echelon form of an augmented matrix is left bracket Start 1 By 5 Matrix 1st Row 1st Column 0 2nd Column 0 3rd C
    10·1 answer
  • PLEASE ANSWER RN!! Which statement can be represented by the equation Two-fifths x + 9 = 9? Two-fifths of nine is a number. Two-
    5·2 answers
  • X = -9 and y = 2 plz help me plz
    7·1 answer
  • And evaluate x(- y + z) for x=-1 y=-2 and z=5
    15·2 answers
  • I need to find the circumference and area of a circle with a diameter of 20 cm
    13·1 answer
  • Ivan has 6 times as many blue beads as red beads .He has 49 red and blue beads in all. How many blue beads does Ivan have?
    10·2 answers
  • PLLLLLLLLLLLLLLLZZZZZZ HELP IVE BEEN STUCK ON THIS ONE
    15·1 answer
  • Please help ill mark brainliest​
    15·2 answers
  • Help help help plz pretty plz
    10·2 answers
  • The following dot plot represents a random sample of elementary students and the number of children that live in their homes.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!