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Free_Kalibri [48]
3 years ago
5

The answer to this plzzz

Mathematics
1 answer:
Shalnov [3]3 years ago
7 0
The chemist needs 381.6 milliliters for their experiment.

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To illustrate the effects of driving under the influence of alcohol, a police officer brought a DUI simulator to a local high sc
nexus9112 [7]

Answer:

Check the explanation

Step-by-step explanation:

Here we have to first of all carry out dependent sample t test. consequently wore goggles first was selected at random for the reason that the reaction time in an emergency taken with goggles would be greater than the amount of reaction time in an emergency taken with not so weakened vision. So that we will get the positive differences d = impaired - normal

b)

To find 95% confidence interval first we need to find sample mean and sample sd for difference d = impaired minus normal.

We can find it using excel that is in the first attached image below,

Therefore sample mean ( \bar{X}_{d} ) = 0.98

Sample sd ( \bar{S}_{d} ) = 0.3788

To find 95% Confidence interval we can use TI-84 calculator,

Press STAT ----> Scroll to TESTS ---- > Scroll down to 8: T Interval and hit enter.

Kindly check the attached image below.

Therefore we are 95% confident that mean difference in braking time with impaired vision and normal vision is between ( 0.6888 , 1.2712)

Conclusion : As both values in the interval are greater than 0 , mean difference impaired minus normal is not equal to 0

There is significant evidence that  there is a difference in braking time with impaired vision and normal vision at 95% confidence level .

7 0
3 years ago
Help !! No work is needed to be shown
o-na [289]

Step-by-step explanation:

By Law of Indices, a^m / a^n = a^(m-n).

Therefore a² / a⁸ = a^(-6).

x = -6.

5 0
3 years ago
Given two dice, what is the probability of rolling a four on the second die, given that you already rolled a four on the first d
Sholpan [36]

Answer:   1/6

Reason:

There's 1 side labeled "4" out of 6 sides total. So that's where the 1/6 comes from.

The "given that you already rolled a four on the first die" is unneeded info in my opinion, because each die is separate or independent from one another.

8 0
2 years ago
Devan spent 14 of her paycheck at the mall. She spent 12 of that money on shoes. What fraction of her total paycheck did she spe
Alla [95]
She spent 12 of her paycheck and had 2 more
3 0
3 years ago
Read 2 more answers
X=?? solve for x hurry!
jarptica [38.1K]

Answer: x + 30 + 90= 180(sum of angles on a straight line)

x= 180-120

x=60

7 0
3 years ago
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