3 years ago

Which transformation represents a reflectiom over the y axis

1 answer:

3 0

A reflection over the Y-axis would be the flipped point or set of points across the y axis while still retaining the same distance from the y-axis.

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Choose one card value and its additive inverse. Choose from the list below to write a real-world story problem that would model

jonny [76]

Answer:

Step-by-step explanation:

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3 years ago

In a survey of 1008 adults, a polling agency asked, "When you retire, do you think you will have enough money to live comfort

Olin [163]

Answer:

[0.4979, 0.5479]

Step-by-step explanation:

-We first determine the sample proportion:

$\hat p=\frac{x}{n}\\\\=\frac{528}{1008}\\\\=0.5238$

-The confidence intervals of a sample proportion is calculated using the formula:

$CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p}{n}}$

#We substitute for the sample proportion and z value to get the Confidence interval:

$CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p}{n}}\\\\=0.5238\pm 1.645\times \sqrt{\frac{0.5238\times0.4762}{1008}}\\\\=0.5238\pm0.0259\\\\=[0.4979,0.5497]$