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3 years ago

Please help me with this math problem asap

Mathematics

2 answers:

Marysya12 [62]3 years ago

8 0

3y to 7y and 6x is the answer

Viktor [21]3 years ago

7 0

On day 15 I believe your picture is a little blurry tho

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You apply for a job and have to take a drug test. You are curious about the error rate for the test so you do some research. You

Ber [7]

Answer:

Test statistic Z = -1.0

|Z| = |-1.0| < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

Step-by-step explanation:

Step(i):-

Given that the population proportion P = 14% =0.14

Given that the sample size 'n' = 382 tests

Given that find a study where 47 out of 382 test results using this test were wrong (either a false positive or a false negative).

Sample proportion

$p = \frac{x}{n} = \frac{47}{382} = 0.1230$

Null hypothesis: H₀ : P = 0.14

Alternative Hypothesis:H₁ : P≠ 0.14

Step(ii):-

Test statistic

$Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }$

$Z = \frac{0.1230-0.14}{\sqrt{\frac{0.14 X0.86}{382} } }$

Z = - 1.0

|Z| = |-1.0| < 1.96 at 0.05 level of significance.

Final answer:-

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

4 0

3 years ago

If lines m and n are parallel, and 5 measures 120o, which is the measure of 3?

Ierofanga [76]

If angle 3 is adjacent (right next to) angle 5, then its measure would be 60 degrees. If angle 3 is congruent (vertical or alternate interior/exterior) to 5, it is 120.

3 0

3 years ago

Give an example of a rule for a pattern list a set of numbers that fit the pattern

zhenek [66]

1, 2,4,8,16
x times 2

6 0

3 years ago

Read 2 more answers

The sum of two numbers is 41. The larger number is one less than twice the smaller number. Find the numbers.

Arte-miy333 [17]

I hope this helps you

small a

larger 2a-1

a+2a-1=41

3a=42

a=14

2a-1=2.14-1=27

6 0

3 years ago

In Spetember of 2013, Mario The Baker introduced a new chocolate cake and hired Doug and Jeremy to bake these cakes. Every custo

professor190 [17]

Answer:

There is a 90.32% probability that the cake was baked by Doug.

Step-by-step explanation:

We have these following probabilities:

A 70% probability that Doug bakes the cake.

A 30% probability that Jeremy bakes the cake.

A 40% probability that a cake baked by Doug gets a thumbs up.

A 10% that a cake baked by Jeremy gets a thumbs up.

One cake was selected at random on 10/01/2014 and got a "thumbs up".

1. Find the probability that the cake was baked by Doug.

The probability that a baked cake gets a thumbs up is:

$P = 0.7*0.4 + 0.3*0.10 = 0.31$

Of those, 0.7*0.4 = 0.28 are baked by Doug.

So the probability is:

$P = \frac{0.28}{0.31} = 0.9032$

There is a 90.32% probability that the cake was baked by Doug.

4 0

3 years ago