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3 years ago

The quadrilateral with these following vertices is a parallelogram. (-4, -3), (2, -3), (4, -6), (-4, -6) True False

Mathematics

2 answers:

zzz [600]3 years ago

7 0

Answer:

truuuuue is theeee answer

Step-by-step explanation:

Step2247 [10]3 years ago

4 0

Answer:

False

Step-by-step explanation:

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What’s the answer to X/2+21=36

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x/2 + 21 = 36

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larisa86 [58]

Answer:

The 99% confidence interval for the population mean is 22.96 to 26.64

Step-by-step explanation:

Consider the provided information,

A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,

The confidence interval if 99%.

Thus, 1-α=0.99

α=0.01

Now we need to determine $z_{\frac{\alpha}{2}}=z_{0.005}$

Now by using z score table we find that $z_{\frac{\alpha}{2}}=2.58$

The boundaries of the confidence interval are:

$\mu-z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80-2.58\times \frac{5}{\sqrt{49}}=22.96\\\mu+z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80+2.58\times \frac{5}{\sqrt{49}}=26.64$

Hence, the 99% confidence interval for the population mean is 22.96 to 26.64

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