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2 years ago

7

The expression means 15 minus the product of 5 times the difference of p minus 6. If p = 8, then the value of the expression is

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1 answer:

Tju [1.3M]2 years ago

4 0

The expression would be 15-5×(8-6)
I hope I helped!

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3.52 A coin is tossed twice. Let Z denote the number of heads on the first toss and W the total number of heads on the 2 tosses.

Rufina [12.5K]

Answer:

a) The joint probability distribution

P(0,0) = 0.36, P(1,0) = 0.24, P(2,0) = 0, P(0,1) = 0, P(1,1) = 0.24, P(2,1)= 0.16

b) P( W = 0 ) = 0.36, P(W = 1 ) = 0.48, P(W = 2 ) = 0.16

c) P ( z = 0 ) = 0.6

P ( z = 1 ) = 0.4

Step-by-step explanation:

Number of head on first toss = Z

Total Number of heads on 2 tosses = W

% of head occurring = 40%

% of tail occurring = 60%

P ( head ) = 2/5 , P( tail ) = 3/5

<u>a) Determine the joint probability distribution of W and Z </u>

P( W =0 |Z = 0 ) = 0.6 P( W = 0 | Z = 1 ) = 0

P( W = 1 | Z = 0 ) = 0.4 P( W = 1 | Z = 1 ) = 0.6

P( W = 1 | Z = 0 ) = 0 P( W = 2 | Z = 1 ) = 0.4

The joint probability distribution

P(0,0) = 0.36, P(1,0) = 0.24, P(2,0) = 0, P(0,1) = 0, P(1,1) = 0.24, P(2,1)= 0.16

<u>B) Marginal distribution of W</u>

P( W = 0 ) = 0.36, P(W = 1 ) = 0.48, P(W = 2 ) = 0.16

<u>C) Marginal distribution of Z ( pmf of Z )</u>

P ( z = 0 ) = 0.6

P ( z = 1 ) = 0.4

8 0

2 years ago

A homemade lip balm consists of coconut oil and beeswax. Coconut oil costs $0.50 per ounce and beeswax costs $2.00 per ounce. If

Alika [10]

Let

a--------> the total cost in dollars of $6$ ounces of coconut oil

b--------> the total cost in dollars of $5$ ounces of beeswax

we know that

$a=0.50 \frac{\$}{ounce}*6=\$3$

$b=2.00 \frac{\$}{ounce}*5=\$10$

therefore

<u>the answer is</u>

the total cost in dollars of $6$ ounces of coconut oil is $a=\$3$

the total cost in dollars of $5$ ounces ofbeeswax is $b=\$10$

7 0

2 years ago

Read 2 more answers

A ball is thrown from a height of 43 meters

AveGali [126]

When the ball will hit the ground, the height will be zero. So we need to replace $h$ with 0 in our equation, and solve for $t$ :
$0=43-4t-5t^{2}$
$-5t^{2}-4t+43=0$
To solve this equation we are going to use the quadratic formula: $t= \frac{-b(+/-) \sqrt{b^{2}-4ac} }{2a}$ .
From our height equation, we can infer that $a=-5$ , $b=-4$ , and $c=43$ . So lets replace those values in our quadratic formula to find $t$
$t= \frac{-(-4)(+/-) \sqrt{(-4)^{2}-4(-5)(43)} }{2(-5)}$
$t=- \frac{5}{8} - \frac{ \sqrt{713} }{8}$ or $t=- \frac{5}{8} + \frac{ \sqrt{713} }{8}$
$t=-3.96$ or $t=2.71$
Since time cannot be negative, $t=2.71$ is the solution of our equation.

We can conclude that the ball will hit the ground after 2.71 seconds.

4 0

2 years ago

6.6.1. Rao (page 368, 1973) considers a problem in the estimation of linkages in genetics. McLachlan and Krishnan (1997) also di

ikadub [295]

Answer:

Step-by-step explanation:

find attached the solution

7 0

2 years ago

Michael has $1.95 totally in his collection, consisting of quarters and nickels. The number of nickels is three more than the nu

Triss [41]

1 nickel=$0.05
1 quarter=$0.25
let the number of quarters be x, the number of nickels will be 3+x
thus:
0.05(3+x)+0.25x=1.95
0.05x+0.15+0.25x=1.95
0.30x=1.8
x=6
thus the number of quarters is 6
the number of nickels=6+3=9

4 0

2 years ago