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3 years ago

Plot the ordered pair (4,-2) State in which quadrant or on which axis the point lies

Mathematics

2 answers:

Minchanka [31]3 years ago

8 0

Quadrant 4, it’s over 4 down 2 which puts it in quadrant 4

CaHeK987 [17]3 years ago

6 0

Answer:

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3 years ago

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The sample mean and standard deviation from a random sample of 32 observations from a normal population were computed as x¯=26 a

Ivan

Answer:

There is enough evidence to infer at the 10% significance level that the population mean is greater than 23

Step-by-step explanation:

Given that the sample mean is 26 and sample std dev = 9

i.e

$\bar x = 26\\s=9\\n = 32\\se = \frac{9}{\sqrt{32} } =1.591$

$H_0: \bar x = 23\\H_a: \bar x >23$

(Right tailed test at 10% significance level)

Mean diff = 3

Test statistic t = $\frac{3}{1.591} \\=1.886$

Critical region is t>1.310

df 31

p value = 0.034

Since p <0.10 reject null hypothesis

There is enough evidence to infer at the 10% significance level that the population mean is greater than 23

Critical region is in the enclosed file

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4 years ago