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allsm [11]
3 years ago
9

Will give brainliest

Mathematics
1 answer:
Gennadij [26K]3 years ago
4 0

Answer:

C.(-10,79)

Step-by-step explanation:

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A recent study found that 81?% of? breast-cancer cases are detectable by mammogram. Suppose a random sample of 11 women with bre
elena-s [515]

Answer:

9.847 %

Step-by-step explanation:

Be p1 the probability that the mammogram detect breast cancer in a woman.

p1=81%.

The probability 'P' that independent and consecutive 'n' singular events with p probability occur is:

P=p_{1} ^{n}

In this case:

P: Probability that breast cancer be detected on 11 women with breast cancer.

P=0.81^{11}=0.09848

P=9.847 %

7 0
4 years ago
Finding angle measures between intersecting lines
Orlov [11]

Answer:

x = 13⁰

Step-by-step explanation:

Since AGC is a right angle, AGD is also a right angle

(Sum of angles of straight line is 180, 180 - 90 =90)

Now, DGF + 77 = 90

or, DGF = 90 - 77

DGF = 13

Now we can say that DGF = x because opposite angles formed by intersecting lines are always equal.

So, x = 13⁰

3 0
3 years ago
Read 2 more answers
The HCF and LCM of two numbers is 9 and 459 respectively if one the number is 27 the other number is (1)
dezoksy [38]

Answer:

153

Step-by-step explanation:

other \: number =  \frac{9 \times 459}{27}  \\  \\  =  \frac{459}{3}  \\  \\  = 153

5 0
3 years ago
Read 2 more answers
In a survey, 28 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped
Rina8888 [55]

Answer:

The 80% confidence level estimate for how much a typical parent would spend on their child's birthday gift is between $33.954 and $35.246.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution should be used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 28 - 1 = 27

80% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 27 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.8}{2} = 0.9. So we have T = 1.314

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.314\frac{2.6}{\sqrt{28}} = 0.646

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 34.6 - 0.646 = $33.954

The upper end of the interval is the sample mean added to M. So it is 34.6 + 0.646 = $35.246

The 80% confidence level estimate for how much a typical parent would spend on their child's birthday gift is between $33.954 and $35.246.

3 0
3 years ago
Pleas answer it in two minutes
attashe74 [19]

Answer: b=4, c=2

Step-by-step explanation:

Since ΔXYZ and ΔVUW are congruent, we can set the sides equal to each other.

c+16=9c                                [subtract both sides by c]

16=8c                                    [divide both sides by 8]

c=2

-------------------------------------------------------------------------------------

10b=b+36                             [subtract both sides by b]

9b=36                                   [divide both sides by 9]

b=4

6 0
3 years ago
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