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IgorC [24]
3 years ago
6

The wind chill is currently -5 degrees, and is scheduled to drop 8 more degrees tonight. What will the wind chill be then?

Mathematics
2 answers:
bulgar [2K]3 years ago
6 0

Answer: No its actually 15

Step-by-step explanation:

maw [93]3 years ago
4 0

Answer:

same signs add, diffrent signs subtract, so -5 degrees minus 8 is -13 because the equation is -5-8.

Step-by-step explanation:

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5A+10=200. Solve the problem
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4 0
3 years ago
Last Wednesday, a random sample of 24 students were surveyed to find how long it takes to walk from the Fretwell Building to the
Ray Of Light [21]

Answer:

E

Step-by-step explanation:

Solution:-

- We are to investigate the confidence interval of 95% for the population mean of walking times from Fretwell Building to the college of education building.

- The survey team took a sample of size n = 24 students and obtained the following results:

                Sample mean ( x^ ) = 12.3 mins

                Sample standard deviation ( s ) = 3.2 mins

- The sample taken was random and independent. We can assume normality of the sample.

- First we compute the critical value for the statistics.

- The z-distribution is a function of two inputs as follows:

  • Significance Level  ( α / 2 ) = ( 1 - CI ) / 2 = 0.05/2 = 0.025

Compute: z-critical = z_0.025 = +/- 1.96

- The confidence interval for the population mean ( u ) of  walking times is given below:

                      [ x^ - z-critical*s / √n  ,   x^ + z-critical*s / √n  ]

Answer:        [ 12.3 - 1.96*3.2 / √24  ,  12.3 + 1.96*3.2 / √24  ]

                   

3 0
3 years ago
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