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3 years ago

50 points to whoever helps

Mathematics

2 answers:

lina2011 [118]3 years ago

8 0

Answer: Hello There!...................

The given data is expressed as 1204, 1206, 1345, 1306, 1207, 1078, 1357, 1232, 1228, 1302, 1189, 1177, 1083, 1094, 1326, 1071, 1427, 1348, 1420, 1253, 1270 The number of items in the data, n is 21. The lowest value is 1071 while the highest value is 1427. The convenient starting point would be 1070.5 and the convenient ending point would be 1427.5 The number of class intervals is √n = √21 = 4.5 Approximately 5 The width of each class interval is (1427.5 - 1070.5)/5 = 72 The end of each class interval would be 1070.5 + 72 = 1142.5 1142.5 + 72 = 1214.5 1214.5 + 72 = 1286.5 1286.5 + 72 = 1358.5 1358.5 + 72 = 1430.5 The frequency for the fifth class, that is between 1358.5 to 1430.5 would be 2

Step-by-step explanation:

Mark me brainest please. Hope this helps. Anna ♥

vredina [299]3 years ago

5 0

Answer:

You just have to put the numbers in order hopefully this helps.

Step-by-step explanation:

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Every 2/3 hour, Harris can sew 1/6 pair of jeans. What is Harris's rate in pairs of jeans per hour?

masha68 [24]

Answer:

0.25 or 1/4 is the answer

Step-by-step explanation:

(1/6)/(2/3) = 1/6 * 3/2 = 3/12 = 1/4

6 0

3 years ago

94 POINTS!!! pls help

svp [43]

Answer:

Hey love! x = 6

Step-by-step explanation:

because 13 x 6 = 78

HOPE THIS HELPS!

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3 years ago

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Readme [11.4K]

Answer:

Step-by-step explanation:

the sum of the two shorter sides must be greater than the longer side

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8 0

3 years ago

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The population standard deviation for the temperature of beers found in Scooter's Tavern is 0.26 degrees. If we want to be 90% c

siniylev [52]

Answer:

19 beers must be sampled.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.9}{2} = 0.05$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.05 = 0.95$ , so Z = 1.645.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

The population standard deviation for the temperature of beers found in Scooter's Tavern is 0.26 degrees.

This means that $\sigma = 0.26$

If we want to be 90% confident that the sample mean beer temperature is within 0.1 degrees of the true mean temperature, how many beers must we sample?

This is n for which M = 0.1. So

$M = z\frac{\sigma}{\sqrt{n}}$

$0.1 = 1.645\frac{0.26}{\sqrt{n}}$