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
Dmitrij [34]
3 years ago
8

Using traditional methods, it takes 94 hours to receive a basic driving license. A new license training method using Computer Ai

ded Instruction (CAI) has been proposed. A researcher used the technique with 40 students and observed that they had a mean of 95 hours. Assume the standard deviation is known to be 3. A level of significance of 0.02 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. Enter the value of the test statistic
Mathematics
1 answer:
natita [175]3 years ago
8 0

Answer: the value of the test statistic is 2.11

Step-by-step explanation:

Given that;

sample mean x" = 95

standard deviation σ = 3

sample size n = 40

Null hypothesis H₀ : μ = 94

Alternative hypothesis H₁ : μ ≠ 94

Level of significance ∝ = 0.02

Test statistic value

z = (x" - μ) / ( σ/√n)

we substitute

z = (95 - 94) / ( 3/√40)

z = 1 / 0.4743

z = 2.11

Therefore, the value of the test statistic is 2.11

You might be interested in
The student council had a cupcake fundraiser. The cupcakes were donated, but the icing, plates and candy were purchased for $50.
Marizza181 [45]
1.50n - 50 = p

Explanation: 1.50n = profits from selling cupcakes. Subtract from cost to make cupcakes (50) to find profit.
7 0
3 years ago
Stretch your thinking, solve the story problem. Draw comparison bars. There were 11 hikers here yesterday. There are 4 hikers he
lara [203]
11-4=7 your welcome
6 0
3 years ago
The box plot represents the distribution of the number of points scored by a cross country team at 12 meets. If possible, find t
Reil [10]

The median is the value equivalent to the vertical line as shown. Hence the median point is 34

<h3>What is a median?</h3>

The median is defined as the value at the middle after rearrangement.

From the given boxplot, we have the following

The minimum value is equivalent to the lower position of the whisker = 22

The maximum value is equivalent to the upper position of the whisker = 42

The median is the value vertical line in between the box = 34

The lower quartile (Q1) = starting point of the box = 33

Upper quartile (Q3) = end point of the box = 38

For the boxplot, the median is the value equivalent to the vertical line as shown. Hence the median point is 34

Learn more on boxplot here: brainly.com/question/12992903?referrer=searchResults

5 0
2 years ago
The coordinates of the image of line segment RT are R'(-2,-4) and T'(4.4). The image was produced by a dilation with a scale fac
Daniel [21]

Given the coordinates of the image of line segment RT to be R'(-2,-4) and T'(4.4), if the image produced was dilated by a scale factor of 12 centered at the origin, to get the coordinate of the end point, we will simply multiply the x and y coordinates of by the factor of 12 as shown:

For R' with coordinate R'(-2,-4), the coordinates of endpoint of the pre-image will be:

R = 12R'

R = 12(-2, -4)

R = (-24, -48)

For T' with coordinate T'(4,4), the coordinates of endpoint of the pre-imagee will be:

T = 12T'

T = 12(4, 4)

T = (48, 48)

Hence the coordinate of the endpoint of the preimage will be at R(-24, -48) and T(48, 48)

6 0
1 year ago
-65, 34, 7, -13, 55,62,-7
Nutka1998 [239]

Answer:

-65, -13, -7, 34, 55, and 62

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • The diameter of a dome is 28 inches. What is the volume? Leave in terms of pi.
    6·1 answer
  • Determine the area under the standard normal curve that lies to the left of ​(a) z equals negative 1.53 commaz=−1.53, ​(b) z equ
    10·1 answer
  • A triangle whose angles have measures x x+5 and x+10
    14·1 answer
  • he labor force participation rate is the number of people in the labor force divided by the number of people in the country who
    9·1 answer
  • Help pls and ty ;-;..<br><br> btw brainly u should alow us to copy n paste questions.
    11·1 answer
  • A worker pushes a wheelbarrow with a force of 20N downward and to the left, as shown in the figure below. The angle the handle m
    11·1 answer
  • The original price of a scarf was $16. During a store-closing sale, a shopper saved $12 on the scarf. What percentage discount d
    8·2 answers
  • On Monday the temperature was -5°F. How many degrees below zero was the temperature
    6·1 answer
  • Jared started a new job. On the first day he had orientation and worked for 2 hours. On the second day he trained for 4 hours. A
    10·1 answer
  • Help me PLEASEEEEE I need help
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!