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3 years ago

How do you solve Log (base 8) 2 =x

1 answer:

3 0

Log8 2 = x
by the definition of logs, we can write

8^x = 2

8^(1/3) = 2

so x = 1/3

or we could solve it by using log to base 10 and use our calculator

log 8^x = log 2
x log 8 = log 2

x = log 2 / log 8 = 0.333.... = 1/3

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Answer:

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Step-by-step explanation:

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3 years ago

A quality control manager is concerned about variability of the net weight of his company’s individual yogurt cups. To check the

Mnenie [13.5K]

Answer:

Decision rule : The p-value < $\alpha$ so the null hypothesis is rejected

The test statistics is $t = -2.8$

The manger will not be manager be satisfied that the company is not under-filling since the company is under-filling its cups

Step-by-step explanation:

From the question we are told that

The sample size is n = 16

The sample mean is $\= x = 5.85$

The standard deviation is $\sigma = 0.2$

The null hypothesis is $H_o : \mu \ge 6$

The alternative hypothesis is $H_a : \mu < 6$

The level of significance is $\alpha = 0.05$

Generally the test statistics is mathematically represented as

$t = \frac{ \= x - \mu }{ \frac{\sigma }{ \sqrt{n} } }$

=> $t = \frac{ 5.86 - 6 }{ \frac{ 0.2}{ \sqrt{ 16} } }$

=> $t = -2.8$

The p-value is obtained from the z-table the value is

$p-value = P(Z < -2.8 ) = 0.0025551$

$p-value = 0.0025551$

Given that the $p-value < \alpha$ we reject the null hypothesis

Hence there is sufficient evidence to support the concern of the quality control manager. and the manger will not be satisfied that since the test proof that the company is under-filling its cups

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