All categories

2 years ago

HELPPPP AHHHH I been stuck on this for over 20 mins

Mathematics

1 answer:

Anika [276]2 years ago

5 0

Dillion and nevaeh- hope this helps

You might be interested in

Please answer by September 7th

navik [9.2K]

The freezing point for antifreeze is -67 F or -55 C

8 0

3 years ago

Find the value of the expression 3d+5 when d=3

sergiy2304 [10]

3x3=9
9+5=14 hope this helps u

8 0

3 years ago

Read 2 more answers

Help me plis un algebra

stellarik [79]

Answer:

Step-by-step explanation:

Add the given numbers to the last recorded temp and see what is closest to 100 degrees.

95.5 + 6.5 = 101.5

95.5 + 6.6 = 102.1

95.5 + 5.5 = 101

95.5 + 5 = 100.5

So the closest to 100 degrees would be 5.

3 0

3 years ago

3 1/4 cups - 1/4 of a cup=

nika2105 [10]

Answer:

3 cups

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0

3 years ago