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3 years ago

PLS HELP.

Mathematics

1 answer:

velikii [3]3 years ago

8 0

Part A: .85 + .50+ .15= 1.50

1.50 - .30= 1.20 liters left

Part B: I used the Substitution property because we knew how much juice was in the jar and we knew how much she drank But we did not know how much was left in the jar which we used the substitution property to figure out how much was left in the jar after she drank .30 liters.

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1. What is the value of x? Show your work to justify your answer.

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3 years ago

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Olenka [21]

Answer:

95% Confidence interval: (0.361,0.539)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 120

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$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

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Putting the values, we get:

$0.45\pm 1.96(\sqrt{\dfrac{0.45(1-0.45)}{120}}) = 0.45\pm 0.089\\\\=(0.361,0.539)$

is the required 95% confidence interval for the proportion of adults who have purchased reusable cloth bags.

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4 years ago