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krek1111 [17]
3 years ago
13

I need help with part b and c pretty p please show your work so I can do this

Mathematics
1 answer:
stiks02 [169]3 years ago
6 0
It is black just letting u know
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The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. F
OlgaM077 [116]

Answer:

The Sample size is 1918.89035

Step-by-step explanation:

Consider the provided information.

It is given that 14 out of 105 samples failed.

Therefore p = 14/105 = 0.13 3... and q=1-0.133=0.867

Samples would be needed to create a 99 percent confidence interval.

Subtract the confidence level from 1, then divide by two.

\frac{(1 -0.99)}{2}=0.005

By standard normal table z=2.5758≈2.58

Calculate the sample size as:

n=\frac{z^2pq}{e^2}

Where,  e is the margin of error,

Substitute the respective values.

n=\frac{(2.58)^2(0.133)(0.867)}{(0.02)^2}=1918.89

Hence, the Sample size is 1918.89035

4 0
3 years ago
Pls help i give u brainliest amd 5 stars​
MAVERICK [17]

Answer:

160

Step-by-step explanation:

60-24=36 left

24 x 8 = 192

36/2=18

9 x 12 =108

108+192=300

300-140= 160 euros profit

7 0
3 years ago
2x+5=3x=4x-5
elena55 [62]
You would need to isolate the "X" variable because it is common in all 3 equations.
8 0
3 years ago
A cake recipe calls for 4 cups of flour and 2 cups of sugar.
Natalka [10]

Answer:

The unit rate is 2 cups of flour per cup of sugar.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Pweeze help and i will give brainliest UwU <3
bazaltina [42]

Answer:

See below for answers

Step-by-step explanation:

1st blank: 2*2*2*2*2*2*2

2nd blank: 2

3rd blank: 7*7

4th blank: 7

5th blank: no

6th blank: doesn't equal

4 0
3 years ago
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