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2 years ago

HELP ME WITH THIS MATH QUESTION PLEASEE

Mathematics

1 answer:

makkiz [27]2 years ago

7 0

Answer:

25. Option b.

26. Option d.

Step-by-step explanation:

25.

She earns $5.25 in one hour so in 1 hour 30 minutes = (1.5 hours) she earns 5.25 + 1.5*5.25 = 5.25 + 2.625

= $7.88.

26.

The domain is {-8, -5 and 7} so it cannot be a or b.

A function is either a one-to-one or a many-to-one relation

Look at option d . The -8 in the domain maps on to 2 elements in the range

(-6 and 1) so its a one-to many relation and its NOT a function.

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Answer:

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Step-by-step explanation:

Data given

n=300 represent the random sample size

$\hat p=0.45$ estimated proportion of people with cats

$p_o=0.40$ is the value that we want to test

$\alpha=0.025$ represent the significance level

z would represent the statistic

$p_v$ represent the p value

Null and alternative hypothesis

We want to test if the true proportion of people with cats is higher than 0.4, so then the best alternative is:

Null hypothesis: $p\leq 0.4$

Alternative hypothesis: $p > 0.4$

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And based on the alternative hypothesis we can conclude that we have a right tailed test

The statistic is given by:

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Replacing we got:

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2 years ago