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Mathematics

1 answer:

uranmaximum [27]3 years ago

7 0

With what may I ask??

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The average customer waiting time at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distrib

tatuchka [14]

Answer: C . $H_0:\mu\geq7.5$ and $H_a:\mu$

Step-by-step explanation:

Definition:

Null hypothesis $(H_0)$ is a statement about the population parameter according to the objective raised by the researcher . It contains '=' , '≤' and '≥' signs.

Alternative hypothesis $(H_a)$ is also a statement about the population parameter but against null hypothesis . It contains '≠' , '<' and '>' signs.

Let $\mu$ be the average customer waiting time for the population.

Given : The average customer waiting time at a fast food restaurant has been 7.5 minutes.

Objective of test : After using new system , the average customer waiting time is at least 7.5 or less than 7.5.

Then, the null and alternative hypothesis for this scenario will be :

$H_0:\mu\geq7.5$

$H_a:\mu$

4 0

4 years ago

Find the average distance each data value in the set is from the mean. Round your answer to the nearest tenth, if necessary. Pri

sineoko [7]

Answer:

The average distance of each observation from the mean is 0.

Step-by-step explanation:

We are given the following in the question:

$7, $20, $9, $35, $12, $15, $7, $10, $20, $25

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{160}{10} =16$

Difference from the mean value of each term:

-9, 4, -7, 19, -4, -1, -9, -6, 4, 9

Average distances =

$\text{Average distance} =\displaystyle\frac{0}{10} =0$

Thus, the average distance of each observation from the mean is 0.

3 0

4 years ago

Please help me with this #5

shepuryov [24]

$\text{Given that,}\\\\a_1 = 10~ \text{ and}~ a_n = a_{n-1} -4~\text{for}~ n\geq 2\\\\a_2 = a_{2-1} -4 = a_1 -4 = 10 -4 = 6\\\\a_3 = a_{3-1} - 4=a_2 -4 = 6 -4 =2\\\\a_4 = a_{4-1} -4 = a_3 -4 = 2 -4 = -2\\\\\text{The first four terms are:}~ 10,~ 6,~ 2~, -2$