All categories

3 years ago

What is the probability that you flip a penny 4 times and it lands on tails all four times in a row?

Mathematics

1 answer:

Elodia [21]3 years ago

5 0

Answer: 1/8

Step-by-step explanation:

Since flipping a coin once and it landing on tails is 1/2, multiply it by however many times you flip it, and that will be you're answer.

You might be interested in

Plzz help i don't understand that well

postnew [5]

Answer:

Step-by-step explanation:

A triangle's lengths HAVE TO add up to 180 degrees.

3 0

3 years ago

Read 2 more answers

4. Which table shows a constant rate of

kakasveta [241]

Answer:

A 16. B 20). C 40 ... 40' 60'| 80. 20 20 20. 2 7 14a. 40 140|| 280'|. BX Hours. Earnings ($).

Step-by-step explanation:

8 0

2 years ago

Please do me explanation!

Zina [86]

Answer:

X=-22

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0

2 years ago

For science class you have to compare the planets’ distances from the Sun. Because each planet has an elliptical orbit around th

Alchen [17]

Answer:

Step-by-step explanation:

7 0

3 years ago