الزاوية في الوضع القياسي التي تكون الزاوية °82 زاوية مرجعية لها هي :

Mathematics

2 answers:

Sophie [7]2 years ago

8 0

Step-by-step explanation:

340 046 9411Collect the contact numbers of the potential customers (could be friends or relatives initially). Create a whats app broadcast list and send them the new products or offers with image to them regularly.

One more thing that helps is advertisement banners on public places such as bus depot, railway stations, etc…

Last but not the list. A COOL customer experience to the customers even though they do not buy anything.

Hope these helps. There are many other important factors as well. You can ask any time for any help in this. Would be glad to help. :)

Nonamiya [84]2 years ago

8 0

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

A polymer is manufactured in a batch chemical process. Viscosity measurements show that it is approximately normally distributed

PilotLPTM [1.2K]

Answer: (751.05, 766.95)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :-

$\overline{x}\pm z*\dfrac{\sigma}{\sqrt{n}}$ ,

where $\sigma$ =population standard deviation.

$\overline{x}$ = sample mean

n= sample size

z* = Two-tailed critical z-value.

Given : $\sigma= 20$

n= 42

$\overline{x}=759$

We know that from z-table , the two-tailed critical value for 99% confidence interval : z* =2.576

Now, the 99% confidence interval around the true population mean viscosity :-

$759\pm (2.5760)\dfrac{20}{\sqrt{42}}\\\\=759\pm (2.5760)(3.086067)\\\\=759\pm7.9497=(759-7.9497,\ 759+7.9497)\]\\=(751.0503,\ 766.9497)\approx(751.05,\ 766.95)$