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makkiz [27]
3 years ago
12

What is the sum of 9.8 and 573.54

Mathematics
1 answer:
Setler79 [48]3 years ago
4 0
583.34 Youre Welcome!
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1. Find the 90% Cl for the population mean if sample
Elden [556K]

Answer:

The answer is below

Step-by-step explanation:

1)

mean (μ) = 12, SD(σ) = 2.3, sample size (n) = 65

Given that the confidence level (c) = 90% = 0.9

α = 1 - c = 0.1

α/2 = 0.05

The z score of α/2 is the same as the z score of 0.45 (0.5 - 0.05) which is equal to 1.65

The margin of error (E) is given as:

E=Z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} } =1.65*\frac{2.3}{\sqrt{65} } =0.47

The confidence interval = μ ± E = 12 ± 0.47 = (11.53, 12.47)

2)

mean (μ) = 23, SD(σ) = 12, sample size (n) = 45

Given that the confidence level (c) = 88% = 0.88

α = 1 - c = 0.12

α/2 = 0.06

The z score of α/2 is the same as the z score of 0.44 (0.5 - 0.06) which is equal to 1.56

The margin of error (E) is given as:

E=Z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} } =1.56*\frac{12}{\sqrt{45} } =2.8

The confidence interval = μ ± E = 23 ± 2.8 = (22.2, 25.8)

8 0
3 years ago
Choose the correct graph that shows the preimage and
irina [24]

Answer:

I think that would be A sorry if I'm wrong

7 0
3 years ago
Read 2 more answers
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Rudik [331]
He should change the coefficient 5
4 0
3 years ago
I need help with math thanks
Viktor [21]
The Last on = 45x^2 - 2x - 8

Reason being is because you would group and multiple:
(9x - 4) • (5x +2)
6 0
3 years ago
Mais family drinks a total of 10 gallons of milk every 6 weeks. How many gallons of milk does the family drink per week? How man
tino4ka555 [31]

Answer:

they drink 1.667 gallons a week. it takes about 6.5 days to drink a whole gallon

Step-by-step explanation:

take 10/6 to get 1.667 then how many days would it take to drink 1 whole gallon

7 0
3 years ago
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