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Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

6 0

Huh I’m not sure how to answer this

jeka57 [31]3 years ago

4 0

Answer:we had in dog C criminal seyyyyy and hbu have a dog in a car accident in a dog and he got to the house to go back and he said

Step-by-step explanation:

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Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 640 randomly s

tatyana61 [14]

Answer:

Given:

Sample size, n = 640

Since result showed that 99.2% of them would erase all of their personal information online if they could, we have:

P' = 99.2% = 0.992

Let's take p = 50%

Our null and alternative hypothesis will be :

H0 : u = 0.5

H1 : u > 0.5

In this case we are to check for the test statistic.

$\frac{P' - p}{\sqrt{p(1-p)/n}}$

$= \frac{0.992 - 50}{\sqrt{50(1-50)/640}}$

= 24.9

Test statistic, Z = 24.893

In conclusion, the results are significantly high, which suggets there is suffcient evidence to support the claim that most adults would erase all of their personal information online.

7 0

3 years ago

Scateboard cost Rs450each in my local store,The shop keeper says if I buy 1 I can buyanother for only 7/9 of the normal price,ho

Whitepunk [10]

Answer:

the cost will be Rs 350

Step-by-step explanation:

The Scateboard cost Rs 450 each in the local store,The shop keeper says if I buy 1 I can buy another for only $\frac{7}{9}$ of the normal price. We are asked to determine the cost of a second scateboard .