2 years ago

Plzzzz help!!! quick one

Mathematics

1 answer:

ludmilkaskok [199]2 years ago

5 0

D= 65 degrees.

Because straight line adds up to 180
So 180-115= 65

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Number of Text Messages a Day A random sample of n = 755 US cell phone users age 18 and older in May 2011 found that the average

Alexeev081 [22]

Answer:

The 95% confidence interval is (29.54 - 53.46}

Step-by-step explanation:

given data:

$\hat X = 41.5$

Se = 6.1

n = 755

a) best estimate $\hat x = 41.5$

b) at 95% confidence interval

$\alpha = 1- 0.95 = 0.05$

$\alpha /2 = 0.025$

$z_{\alpha/2} = z_{0.025} = 1.96$

at 95% confidence interval for [/tex]\mu[/tex]

$\hat x \pm z_{\alpha /2} \times Se$

$41.5 \pm 1.96\times 6.1$

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The ages of Anjali and Aditya are in the ratio 3: 4.Eight years later sum

Maksim231197 [3]

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Step-by-step explanation:

their ages are in the ratio 3 : 4

let Anjali = 3x and Aditya = 4x ← present ages

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8 0

2 years ago

Plzzzz help!!! quick one ​

Plzzzz help!!! quick one