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alexdok [17]
3 years ago
13

Can someone help me please​

Mathematics
2 answers:
Gennadij [26K]3 years ago
7 0

Answer: 5 Times

Step-by-step explanation: P(roll 4) = 1/6

---

Expected # of 4 in 30 rolls = (1/6)*30 = 5

Andrej [43]3 years ago
4 0

Answer: is A

Step-by-step explanation:

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Answer:

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side 1 =4

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8 0
3 years ago
1.
Evgen [1.6K]

Answer:

Null hypothesis H_0; \mu=5

Alternative hypothesis H_a; \mu\neq 5

Step-by-step explanation:

Consider the provided information.

The shower by an adult is 5 minutes.

The mean amount of time that college students spend in the shower is significantly different from 5 minutes. In a sample of 15 students, he found the average time was 4.29 minutes and the standard deviation was 0.75 minutes.

We need to determine the appropriate null and alternative hypotheses.

A null hypothesis is there is no statistical significance between the two variables.

An alternative hypothesis is there is a statistically significant relationship between two variables.

Therefore the required null and alternative hypothesis are:

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Alternative hypothesis H_a; \mu\neq 5

3 0
3 years ago
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