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Pepsi [2]
3 years ago
13

sing traditional methods, it takes 108108 hours to receive a basic driving license. A new license training method using Computer

Aided Instruction (CAI) has been proposed. A researcher used the technique with 110110 students and observed that they had a mean of 107107 hours. Assume the standard deviation is known to be 77. A level of significance of 0.020.02 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:
solniwko [45]3 years ago
8 0

Answer:

z_{stat} = -1.50            

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 108

Sample mean, \bar{x} = 107

Sample size, n = 110

Alpha, α = 0.02

Population standard deviation, σ = 7

Formula:

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

Putting all the values, we have

z_{stat} = \displaystyle\frac{107 - 108}{\frac{7}{\sqrt{110}} } = -1.50

The test statistic is -1.50

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4) Solve for w: P = 4L + 4W
xxMikexx [17]

Answer:

Rewrite the equation as 4L+4W=P.

4L+4W=P

Subtract 4L from both sides of the equation.

4W=P−4L Divide each term by 4 and simplify.

W=P/4−L

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
duane and mick are saving their money to build a treehouse. duane adds $5 to their piggy bank every other week. mick adds $2 eve
levacccp [35]
10 weeks is the number of weeks they have been saving their money.

Duane = $5 every two weeks
Mick = $2 every week.

Get the value of Duane's weekly contribution = $5 / 2 = $2.5

Duane's share + Mick's share = $45
$2.5x  + $2.0x = $45   ===>> equation can also be x(2.5 + 2) = 45
$4.5x = $45
$4.5x / $4.5 = $45 / $4.5
x = 10 weeks.

To check:

$2.5(10) + $2(10) = $45
$25 + $20 = $45
<span>$45 = $45</span>
5 0
3 years ago
Read 2 more answers
Y=4x-18<br><br> Ordered pairs
Nitella [24]

There are any number of ordered pairs that work for this equation. Below are some examples.

(0, -18) (2, -10) (5, 2)

In order to find these and any others, you simply select a value for x and plug into the equation to find y. Below is an example.

y = 4x - 18

y = 4(0) - 18

y = 0 - 18

y = -18


(0, -18)

8 0
3 years ago
A 4​-ft vertical post casts a 14​-in shadow at the same time a nearby cell phone tower casts a 119​-ft shadow. How tall is the c
Sholpan [36]

well if the shadow was 119 feet the tower would be 19 feet maybe? I think sorry if this is no help at all. But you could try it sorry again

4 0
3 years ago
Read 2 more answers
A rectangular field has side lengths that measure 5/6 mile and 1/3 mile. What is the area of the field?
aliya0001 [1]
5/18 square miles



To find area, multiply the length (5/6) by the width (1/3). To multiply fractions, you multiply the numerators together to get the new numerator and multiply the denominators together to get the new denominator.

Start by multiplying the numerators.

5 * 1 = 5

Now multiply the denominators.

6 * 3 = 18

Now, just put them together to get 5/18 square miles.



Please consider marking this answer as Brainliest to help me advance.
6 0
3 years ago
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