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Inga [223]
3 years ago
12

By noon, the temperature increased 21 from the morning low -13 what was was the tempature noon

Mathematics
1 answer:
torisob [31]3 years ago
5 0
-13+21=14
The temperature is 14 degrees during your afternoon.
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8 0
3 years ago
The ratio of ₹ 2 to 120 paise is ___________
Pachacha [2.7K]

Answer:

<u>5 : 3</u>

Step-by-step explanation:

100 paise = 1 rupee

Therefore, the ratio =>

2 rupees : 120 paise

2 : 1.2

10 : 6

<u>5 : 3</u>

4 0
2 years ago
Evaluate the expression. ​ 108 ÷ 9 x (−12) x 6 - (100 / 5)
Setler [38]
                       
(108/9x)(-12)x<span>6-100/5
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5 0
3 years ago
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week.
mezya [45]

Answer:

a) The 90% confidence interval would be given by (18.52;20.49)  

b) The 95% confidence interval would be given by (18.32;20.68)    

Step-by-step explanation:

1) Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X=19.5 represent the sample mean for the sample  

\mu population mean (variable of interest)

\sigma=5.2 represent the population standard deviation

n=75 represent the sample size  

2) Confidence interval 90%

The confidence interval for the mean is given by the following formula:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)

Since the Confidence is 0.90 or 90%, the value of \alpha=0.1 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.005,0,1)".And we see that z_{\alpha/2}=1.64

Now we have everything in order to replace into formula (1):

19.5-1.64\frac{5.2}{\sqrt{75}}=18.515    

19.5+1.64\frac{5.2}{\sqrt{75}}=20.485

So on this case the 90% confidence interval would be given by (18.52;20.49)    

3) Confidence interval 95%

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that z_{\alpha/2}=1.96

Now we have everything in order to replace into formula (1):

19.5-1.96\frac{5.2}{\sqrt{75}}=18.323    

19.5+1.96\frac{5.2}{\sqrt{75}}=20.677

So on this case the 95% confidence interval would be given by (18.32;20.68)    

5 0
3 years ago
Please help me ASAP! (multiple choice)
mart [117]
Arithmetic

B

-common difference in formula for the nth term
7 0
3 years ago
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