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
IRINA_888 [86]
3 years ago
15

Using traditional methods, it takes 9696 hours to receive a basic flying license. A new license training method using Computer A

ided Instruction (CAI) has been proposed. A researcher used the technique with 150150 students and observed that they had a mean of 9595 hours. Assume the standard deviation is known to be 88. A level of significance of 0.050.05 will be used to determine if the technique performs differently than the traditional method. Find the value of the test statistic. Round your answer to 2 decimal places.
Mathematics
1 answer:
astra-53 [7]3 years ago
3 0

Answer:

The value of the test statistic is -1.53            

Step-by-step explanation:

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 96 hours

Sample mean, \bar{x} = 95 hours

Sample size, n = 150

Alpha, α = 0.05

Population standard deviation, σ = 8 hours

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{95 - 96}{\frac{8}{\sqrt{150}} } = -1.53

Thus, the value of the test statistic is -1.53

You might be interested in
Ben wants to join a fitness club. The fitness club charges an initial membership fee of $49.50 and a monthly fee of $17.50. Ques
ivann1987 [24]

Answer:

9 months

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
You reach into your sock drawer without looking. You have 9 white pairs and 11 other colored pairs. What is the probability you
Allisa [31]

Answer:9/20

Step-by-step explanation:

*9+11=20

*9 white colored socks out of 20 total socks

6 0
3 years ago
PLEASE HELP!!!! WILL GIVE YOU BRAINLIEST!!
borishaifa [10]

The graph means that 2 x and 9.4 make up 20 in total, so set up the equation 2x + 9.4 = 20.

Subtract 9.4 from both sides.

2x = 10.6

Divide by 2.

x = 5.3

The answer is the value of x that makes this equation true is 5.3

Hope this helps

5 0
3 years ago
Read 2 more answers
I need help on 15-18
zloy xaker [14]

Answer and step-by-step explanation:

15. 7(8+t) -5t

Break the bracket, we got:

= 7*8 + 7*t - 5t

= 56 + 7t - 5t

= 56 + 2t or 2 (28 + t)

16. 4n - 2n = 84

2n = 84

Divide both side by 2:

2n / 2 = 84 / 2

n = 42

17. y + 3y = 96

4y = 96

Divide both side by 4:

4y / 4 = 96 / 4

y = 24

18. 5p - 2p = 51

3p = 51

Divide both side by 3:

3p / 3 = 51 / 3

p = 17

Hope this helped :3

6 0
3 years ago
The sales tax in your city is 4.4%, point, 4, percent, and an item costs $3dollar sign, 3 before tax. How much tax would you pay
adell [148]

We are given an item cost before tax = $3.

Sales tax on item = 4.4% of the actual cost.

We are given actual cost = $3.

Therefore, 4.4 % of 3 = 0.044 × 3 = $0.132.

We need to round it to the nearest hundredth or cent that is upto two decimal places.

0.132 could be round to 0.13.

<h3>Therefore, $0.13 tax would you pay on that item on the given item cost $3.</h3>
3 0
3 years ago
Other questions:
  • 4x + 1 + x = -4<br> Can anybody help me solve this ?
    7·2 answers
  • Three identical bags each contain two marbles. One bag has two white marbles, one has two black marbles, and one has one of each
    15·1 answer
  • In parallelogram LMNO, LM = 4.12, MN = 4, LN = 5, and OM = 6.4. Diagonals and intersect at point R. What is the length of OR?
    6·2 answers
  • The sum of y and 20 is less than 37
    8·1 answer
  • Solve for n.<br> n-26 = -13<br> n=1
    11·2 answers
  • Which number line below shows points labeled correctly from least to greatest?
    13·2 answers
  • Martha purchased a car for $17,500. The value of a car decreases by 7% each year.
    14·1 answer
  • Multi-Step Literal Equations
    8·1 answer
  • The yoga instructor earns$25 per class and $10 per student that shows up. They want to earn more than $385 teaching 6 classes th
    8·2 answers
  • In a dilation, what is preserved and what is altered?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!