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liberstina [14]
3 years ago
13

Women's heights are normally distributed with a mean given by p = 63.6 in. and a standard deviation given by o = 2.5 in. (a) If

1' woiman is randomly selected, find the probability that her height is less than 67.4 in. Enter a number correct to 4 decimal places: (b): 1f 64 women are randomly selected, find the probability that they will have a mean height less than 67.4 in. Enter a number correct to 4 decimal places:​
Mathematics
1 answer:
Ganezh [65]3 years ago
4 0

Step-by-step explanation:

I am sorry question samajh Nahin a Raha question dijiye

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A ship travels 62.5 km in 1st hour of sailing. Starting from 2nd hour, the distance travelled per hour is x% of that in the prec
Bas_tet [7]
Speed of the ship in the second hour =  (62.5 * x ) / 100  kph.

In third hour it is  [(62 * x) / 100 ] * x/100]

is 4th hour its is the above * x/100 again  so we can now form the equation

62.5x      x          x
------- *   ----  *  ----    =  32
100      100      100

62,5 x^3 = 32,000,000
x^3 =  512,000
x = 80 <-----  Answer  to (a)

(b)  Ship travels 62.5 in first hour then  this falls by a common ratio of 0.8 each hour so we have a geometric sequence 

Dist travelled in 6 hours  =  a1  1 - r^n
                                                --------  = 62.5* (1 - 0.8^6) / 1 -0.8 = 230.56

                                               1 - r

Answer is    230.56 km 




5 0
3 years ago
joel is laying pipe for a sprinkler system before he plants his lawn . the lawn is a rectangle, 15 feet long and 8 feet wide. he
Nadya [2.5K]

Answer:

The length of the pipe = 17 feet

Step-by-step explanation:

length = 15 feet

width = 8 feet

Pythagorean theorem,

(diagonal)² = (length)² +(width)²            {all angles of rectangle are 90°}

                   = 15² + 8²

                   = 225 + 64  = 289

diagonal    = √289 = √ 17 * 17

                   = 17 feet

7 0
3 years ago
The solution to which system of equations has an x-value of 3?
ANEK [815]

Answer:

D)

Step-by-step explanation:

7 0
2 years ago
Which statement is false?
Luda [366]

Answer:

A.

Step-by-step explanation:

1/5 is a rational number so A is false. Just to prove this ill show every other answer is true.

B is true because rational; numbers have a repeating pattern while irrational do not.

C is true as any number not involving i is a real.

D is true as all integers have a repeating pattern if turned into decimal form.

4 0
3 years ago
WILL MAKE BRAINLIEST!!!<br><br> what is the slope of each line?
Scorpion4ik [409]
The correct answer is d, 2
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2 years ago
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