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2 years ago

Help me please,,,,,,,,,,,,,,,,

Mathematics

1 answer:

hichkok12 [17]2 years ago

4 0

Answer:

ill help you what do you need help on tho???

Step-by-step explanation:

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Jamie owns about 3 times as much books as Carly. Jamie owns 42 books write an equation and use it to estimate the number n of bo

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Answer:

Carly owns 14 books.

Step-by-step explanation:

42/3= 14

hope this helps!!! (:

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2 years ago

Helen used 1/4 of her savings for her first year of college. 3/8 of that money was spent on her housing and meals. Which equatio

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3/32
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3 years ago

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Which of the following statements it’s true?

guapka [62]

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3 years ago

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In a survey of 603 adults, 98 said that they regularly lie to people conducting surveys. Create a 99% confidence interval for th

marysya [2.9K]

Answer:

The population proportion is estimated to be with 99% confidence within the interval (0.1238, 0.2012).

Step-by-step explanation:

The formula for estimating the population proportion by a confidence interval is given by:

$\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}$

Where:

$\hat{p}$ is the sample's proportion of success, which in this case is the people that regularly lie during surveys,

$z_{\alpha /2}$ is the critical value needed to find the tails of distribution related to the confidence level,

$n$ is the sample's size.

<u>First</u> we compute the $\hat{p}$ value:

$\hat{p}=\frac{successes}{n}=\frac{98}{603}=0.1625$

<u>Next</u> we find the z-score at any z-distribution table or app (in this case i've used StatKey):

$z_{\alpha /2}=2.576$

Now we can replace in the formula with the obtained values to compute the confidence interval:

$\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}=0.1625\pm 2.576\times\sqrt{\frac{0.1625\times(1-0.1625)}{603}}=(0.1238, 0.2012)$

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2 years ago

12,434.4 round nearest whole number

Nata [24]

Answer:

12,434

Step-by-step explanation:

since after the decimal point the number ranges 0-4 it will nullify but if 5-9 it will add 1 to the number before the point

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2 years ago