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1 year ago

A bike wheel.

Mathematics

1 answer:

alina1380 [7]1 year ago

8 0

Answer: BABABAB

Step-by-step explanation:

BHBAHBABAHBABHABHBAHBABHABHBAbhaBHBA

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A die is rolled nine times and the number of times that two shows on the upper face is counted. If this experiment is repeated m

vivado [14]

Answer:

$E(x) = 1.5\\$

Step-by-step explanation:

Given

$n = 9$ -- number of rolls

Required

The mean of 2's

The distribution follows binomial distribution where:

$X \to Binomial(n,p)$

In this case:

$p= \frac{1}{6}$ ---- the theoretical probability of rolling 2

So, the mean of 2's is calculated using:

$E(x) = np$

$E(x) = 9 * \frac{1}{6}$

$E(x) = \frac{9}{6}$

Simplify

$E(x) = \frac{3}{2}$ or

$E(x) = 1.5\\$

5 0

3 years ago

Devon records four hours of reality shows on her DVR she records comedy shows for three eights of that amount of time Devon watc

USPshnik [31]

4/8= ?/8 is the format

4 0

4 years ago

Evaluate the equation. -4x = 14 A.10 B. 7/2 C. -7/2 D. -10

Alex_Xolod [135]

Answer:

c) -7/2

Step-by-step explanation:

14/-4= -3.5

4 0

3 years ago

Read 2 more answers

Lucky Charms are sold in boxes with an advertised mean weight of 20.5 oz. The standard deviation is known to be 2.25 oz. A consu

Alinara [238K]

Answer:

Set of hypothesis.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 20.5 oz

Sample mean, $\bar{x}$ = 20.4 oz

Sample size, n = 50

Population standard deviation, σ = 2.25 oz

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 20.5\text{ oz}\\H_A: \mu < 20.5\text{ oz}$

We use One-tailed z test(left tailed) to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{20.4 - 20.5}{\frac{2.25}{\sqrt{50}} } = -0.3142$

Based on the significance level, we can make our decision and complete the hypothesis testing.

We may accept the null hypothesis or fail to accept depending on different significance level.

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4 years ago

A scuba diver is 12 meters below sea level. If the diver descends 39 meters further, what integer represents the scuba diver’s n

marusya05 [52]

I think the answer is -51

7 0

3 years ago