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3 years ago

13

Alexis goes to the flower shop and buys 6 tulips and 4 daffodils. The total cost is $46. Marci goes to the same flower shop and

buys 3 tulips and 5 daffodils. The total cost is $41.75. The bills do not list a per item price. How much does one tulip and one daffodil cost?

1 answer:

puteri [66]3 years ago

4 0

Your answer can be two answer it can 126.12 or it can possibly be 96.80

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Isaac drink 8 glasses of water each day he says he will drink 2,920 glasses of water in a year that has 365 days is the exact an

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3 years ago

Read 2 more answers

Increasing numbers of businesses are offering child-care benefits for their workers. However, one union claims that fewer than 8

Y_Kistochka [10]

Answer: c. -2.15

Step-by-step explanation:

As per given we have:

Null hypothesis : $H_{a}: p\geq0.80$

Alternative hypothesis : $H_{a}: p$

let p be the proportion of firms in the manufacturing sector offer child-care benefits

A random sample of 390 manufacturing firms is selected and 295 of them offered child-care benefits.

sample size : n= 390

sample proportion : $\hat{p}=\dfrac{295}{390}=0.7564$

Test statistic for proportion :

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Substitute the values , we get

$z=\dfrac{0.7564-0.80}{\sqrt{\dfrac{0.80(1-0.80)}{ 390}}}$

$z=\dfrac{-0.0436}{\sqrt{0.000410256410256}}$

$z=-2.15257752474\approx-2.15$

Hence, the value of test statistic = -2.15

Correct option is c. -2.15 .

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3 years ago