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Morgarella [4.7K]

3 years ago

14

16 points + BRAINLIEST if your answer is correct!

1 answer:

Marizza181 [45]3 years ago

8 0

Answer:

second one

112 red tomatoes

Step-by-step explanation:

8 - 5 = 3

42/3 = 14

14 times 8 = 112

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KonstantinChe [14]

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$3^{-2}=\frac{1}{3²}=\frac{1}{9}$

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2 years ago

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3 years ago

A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Portland. The stu

iVinArrow [24]

Answer:

$-0.061 < P_1 -P_2< 0.025$

Step-by-step explanation:

Give data:

$n_1 = 350$

$n_2 =250$

$x_1 = 23$

$x_2 = 21$

$\hat{P} 1 = \frac{x_1}{n_1} = \frac{23}{350} = 0.066$

$\hat{P} 2 = \frac{x_2}{n_2} = \frac{21}{250} = 0.084$

for 95% confidence interval

$\alpha = 1 - 0.95 = 0.05 and \alpha/2 = 0.025$

$z_{\alpha/2} = 1.96$ from standard z- table

confidence interval for P_1 and P_2 is

$\hat{P} 1 - \hat{P} 2 \pm z_{\alpja/2} \sqrt{\frac{\hat{P} 1(1-\hat{P} 1)}{n_1} +\frac{\hat{P} 2(1-\hat{P} 2)}{n_2}}$

$(0.066 - 0.084) \pm 1.96 \sqrt{\frac{0.066(1-0.066)}{350} +\frac{0.084(1-0.084)}{250}}$

$-0.018 \pm 0.043$

confidence interval is

$-0.018 - 0.043 < P_1 -P_2$

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3 years ago

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Answer:

is there an image to go with this?

Step-by-step explanation:

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3 years ago

Evaluate if m=1 and n=2 what’s 15m/n+1-m^2+n

Jobisdone [24]

$\\ \sf\longmapsto \dfrac{15m}{n}+1-m^2+n$

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$\\ \sf\longmapsto \dfrac{15}{2}+3-1$

$\\ \sf\longmapsto \dfrac{15}{2}+2$

$\\ \sf\longmapsto \dfrac{15+4}{2}$

$\\ \sf\longmapsto \dfrac{19}{2}$

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3 years ago