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yaroslaw [1]
3 years ago
7

BRCA1 is a gene that has been linked to breast cancer. Researches at Stanford University wanted to estimate what proportion of w

omen with a family history of breast cancer show a BRCA1 mutation. In 2014, they used DNA analysis to search for BRCA mutations in 173 women with family histories of breast cancer. Of the 173, they found that 29 had BRCA1 mutations. Calculate the Point Estimate. Give your answer to 3 decimal places.
Mathematics
1 answer:
Evgesh-ka [11]3 years ago
7 0

Answer:

The point estimate for the proportion of women with BRCA1 mutation is 0.168

Step-by-step explanation:

The point estimate for the proportion of women with BRCA1 mutation is the number of women with this mutation divided by the size of the sample.

Of the 173, they found that 29 had BRCA1 mutations.

29/173 = 0.168

The point estimate for the proportion of women with BRCA1 mutation is 0.168

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A wireless company offers two cell phone plans. For the month of September, Plan A charges $35 plus $0.25 per minute for calls.
valentina_108 [34]

Answer:

60 minutes

Step-by-step explanation:

Let the number of minutes be represented as x

For Plan A

Plan A charges $35 plus $0.25 per minute for calls.

$35 + $0.25 × x

35 + 0.25x

For Plan B

Plan B charges $20 plus $0.50 per minute for calls.

$20 + $0.50 × x

20 + 0.50x

For what number of minutes do both plans cost the same amount?

This is calculated by equating Plan A to Plan B

Plan A = Plan B

35 + 0.25x = 20 + 0.50x

Collect like terms

35 - 20 = 0.50x - 0.25x

15 = 0.25x

x = 15/0.25

x = 60 minutes.

Hence, the number of minutes that both plans cost the same amount is 60 minutes

7 0
3 years ago
Find the distance between (-3, 11) and (-6,4).Round to the nearest then the
Likurg_2 [28]

Answer:

d =7.6

Step-by-step explanation:

(-3,11) =(x_1,y_1)\\(-6,4)=(x_2,y_2)\\\\\mathrm{Compute\:the\:distance\:between\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\\\quad \sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}\\\\=\sqrt{\left(-6-\left(-3\right)\right)^2+\left(4-11\right)^2}\\= \sqrt{(-6+3)^2+(4-11)^2}\\ \\d= \sqrt{(-3)^2+(-7)^2} \\\\d = \sqrt{9+49}\\ \\d = \sqrt{58}\\\\d = 7.61577\\\\d =7.6

3 0
3 years ago
Simplify: 5x + 4x2 + 10 + 2x2 + 2x – 6+2 - 1.
erik [133]
The answer would be 7x+ 17
8 0
3 years ago
Which expression is equivalent to V-80?<br> -455<br> O -4.5;<br> O 4.5;<br> O 415
steposvetlana [31]

Answer:

v-12

Step-by-step explanation:

1Nonly_n8thanfull

4 0
2 years ago
Read 2 more answers
One morning, the temperature was -5 ferenhight. By noon, the temperature had increased 12 degrees. What was the temperature at n
Papessa [141]

Answer:

Noon\ Temperature = 7F

Step-by-step explanation:

Given

Initial Temperature = -5F

Change (by noon) = 12 degrees

Required

Determine the temperature at noon

The temperature by noon is calculated as thus;

Noon\ Temperature = Initial\ Temperature + Change

Substitute values for Initial temperature and change

Noon\ Temperature = -5F + 12

Noon\ Temperature = 7F

Hence, the temperature at noon is 7F

6 0
3 years ago
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