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Zigmanuir [339]
3 years ago
8

3 3⁄10 - 2 23⁄100 =

Mathematics
2 answers:
zzz [600]3 years ago
7 0

Answer:

exact form: 107/100

decimal form: 1.07

mixed number: 1 7/100

Step-by-step explanation:

Lelu [443]3 years ago
7 0

Answer: 107/100

Step-by-step explanation:

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Automobile mechanics conduct diagnostic tests on 150 new cars of particular make and model to determine the extent to which they
galben [10]

Answer: 0.0944

Step-by-step explanation:

Given : Sample size of cars : n= 150, sample size is greater than 30 , so we use z-test.

Number of cars tested do have faulty catalytic converters =42

Then the proportion of cars   have faulty catalytic converters : \hat{p}=\dfrac{42}{150}=0.28

Critical value of z for 99% confidence level : z_{\alpha/2}=2.576

Formula for Margin of error :

E=z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

E=(2.576)\sqrt{\dfrac{0.28(1-0.28)}{150}}\\\\=0.0944377199216\approx0.0944\ \text{Rounded to four decimal places}

Hence, the required margin of error = 0.0944

6 0
3 years ago
Draw a line through the point (2, 2) with a slope of 1. Draw a line through the point (1,−1) with a slope of 1.
Mars2501 [29]

Answer:

should look like this

Step-by-step explanation:

equations are y=x  and  y = -x if needed

4 0
3 years ago
Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 76.676.6
faltersainse [42]

Answer:

Step-by-step explanation:

Researchers measured the data speeds for a particular smartphone carrier at 50 airports.

The highest speed measured was 76.6 Mbps.

n= 50

X[bar]= 17.95

S= 23.39

a. What is the difference between​ the carrier's highest data speed and the mean of all 50 data​ speeds?

If the highest speed is 76.6 and the sample mean is 17.95, the difference is 76.6-17.95= 58.65 Mbps

b. How many standard deviations is that​ [the difference found in part​ (a)]?

To know how many standard deviations is the max value apart from the sample mean, you have to divide the difference between those two values by the standard deviation

Dif/S= 58.65/23.39= 2.507 ≅ 2.51 Standard deviations

c. Convert the​ carrier's highest data speed to a z score.

The value is X= 76.6

Using the formula Z= (X - μ)/ δ= (76.6 - 17.95)/ 23.39= 2.51

d. If we consider data speeds that convert to z scores between minus−2 and 2 to be neither significantly low nor significantly​ high, is the​ carrier's highest data speed​ significant?

The Z value corresponding to the highest data speed is 2.51, considerin that is greater than 2 you can assume that it is significant.

I hope it helps!

3 0
4 years ago
Help me pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeee
hoa [83]

Answer:

93-96          3

97-100        3

101-104       4

105-108          4

109-112        2

histogram you fill in 3 bars, 3 bars, 4 bars, 4 bars, 2 bars

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Which point would form a right isosceles triangle with Points A and B on the coordinate grid below?
ehidna [41]

Answer:

I think it's -3,9 there are 7 boxes between a and b and there are 7 boxes between point a and 9

4 0
3 years ago
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