What is the domain of the cluster in the scatter plot?

A spinner with 10 equal sections, numbered 1 to 10, is spun. Then a coin is flipped. What is the probability that the spinner wi

Assoli18 [71]

Answer:

Step-by-step explanation:(Probability of landing on 3)*(Probability of landing on heads) = (1/10)*(1/2) = (1/20) or 0.05 or 5%

4 0

3 years ago

Read 2 more answers

Daniel has $25 to spend at the fair. If the admission to the fair is $4 and the rides cost $1.50 each , what is thw greatest num

kondor19780726 [428]

$25 is the total amount of money.
Admission is a constant, meaning that price will not vary and is fixed.
The rides each cost something so the price of rides will vary, unlike the constant (admission).

Thus making x the number of rides, we have the equation:
25 = 4 + 1.5x.
We need to solve for x, but x must be a whole number so we will round down if the solution is not an integer.

1.5x = 21
Divide by 1.5 on both sides.
x=14

Daniel can go on 14 rides maximum.

8 0

3 years ago

Need answer asap please answer quick

Alja [10]

Answer:

d option

Step-by-step explanation:

Area of rectangle = length × breadth

Placing the values,

143 m² = length × 6.5 m

length = 143 m²/6.5 m = 22 m.

Hope it helps.

4 0

3 years ago

A substance abuse researcher wants to know whether reaction time is decreased by frequent alcohol use. He randomly selects 164 a

ella [17]

Answer:

We conclude that the reaction time is increased or remains same by frequent alcohol use.

Step-by-step explanation:

We are given that a substance abuse researcher wants to know whether reaction time is decreased by frequent alcohol use. He randomly selects 164 alcoholics and finds that their mean reaction time (in ms) to a stimulus equals 283.

Reaction times to the stimulus in the general population are distributed normally with a mean equal to 281 and a standard deviation equal to 28.

Let $\mu$ = mean reaction time after alcohol use.

So, Null Hypothesis, $H_0$ : $\mu$ $\geq$ 281 {means that the reaction time is increased or remains same by frequent alcohol use}

Alternate Hypothesis, $H_A$ : $\mu$ < 281 {means that the reaction time is decreased by frequent alcohol use}

The test statistics that would be used here One-sample z test statistics as we know about population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n}}}$ ~ N(0,1)

where, $\bar X$ = sample mean reaction time (in ms) = 283

$\sigma$ = population standard deviation = 28

n = sample of alcoholics = 164

So, test statistics = $\frac{283-281}{\frac{28}{\sqrt{164}}}$

= 0.915

The value of z test statistics is 0.915.

Now, at 0.01 significance level the z table gives critical value of -2.3263 for left-tailed test. Since our test statistics is more than the critical values of z, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which we fail to reject our null hypothesis.

Therefore, we conclude that the reaction time is increased or remains same by frequent alcohol use.

5 0

3 years ago

Find the midpoint of the segment between the points (15,−9) and (−2,−18) A. (172,92) B. (13,−27) C. (132,−272) D. (−13,27)

kotegsom [21]

Answer:

from my calculation, the answer is B

5 0

4 years ago