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alekssr [168]
3 years ago
13

If the value of the blur radius is _____, no shadow will appear

Mathematics
1 answer:
vladimir1956 [14]3 years ago
4 0

The value of the Blur radius is zero

Then no shadow will appear.

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In 1990, 1000 adults were randomly selected and each was asked if they smoked, 300
Oduvanchick [21]

Answer:

 The proportion of smokers was higher in 1990 than in 2000

Step-by-step explanation:

Solution

Recall that,

The total number of sample 1 (n1) = 1000

Total  sample 2 number  (n2) = 2000

The number of favourable events (X1) = 300

The number of favourable events (X2) = 500

so,

p₁ = X₁/n₁ = 300/1000 = 0.3

p₂ = X₂/n₂ =500/2000 =0.25

α = 0.05

We are interested in testing the hypothesis.

The  hypothesis (Null) ....>  H₀ : p₁ = p₂

Alternate hypothesis------ > H₁ : p₁ > p₂

Thus,

P = X₁ + X₂/ n₁ + n₂

P =300 + 500/1000 +2000

P =800/3000

=0.2667

Now,

Z₀ = P₁ - P₂/√ P (1 -P) (1/n₁ + 1/n₂)

Z₀ =  0.3 - 0.25/√0.2667  (1 - 0.2667) (1/1000 + 1/2000)

Z₀ = 0.4999999999999999/√ 0.2667 (0.7333000000000001) (0.001 +0.0005)

Then,

Z₀ = 0.4999999999999999/√0.00029335666500000004

Z₀ = 2.9193

so,

zα/2 = z0.05/2 =z0.025

zα/2 = 1.6448536269514722

Now, we apply the decision rule:

Decision Rule: Reject the null hypothesis if the statistic value test is higher than the critical value 1.6448536269514722

The statistic value, 2.9193 is greater than the critical value 1.6448536269514722,  then we will reject the null hypothesis.

Therefore, the proportion of smokers was higher in 1990 than in 2000

3 0
3 years ago
a line passed through the point (8,9) and has a slope of -3/4. write an equation in slope intercept form.
bagirrra123 [75]

Answer:

y = -3/4x + 3

Step-by-step explanation:

y - 9 = -3/4 (x-8)

y-9 = -3/4x -6

y = -3/4x - 6 + 9

y = -3/4x + 3

8 0
3 years ago
In February, Mr. Williams opened a checking account and made deposits of $949, $1419, $1598, and $1289. He also wrote checks for
kkurt [141]

Based on the deposits and written checks, Mr. Williams' account balance at the end of the month is <u>$3,606</u>.

<h3>What is the account balance?</h3>

The account balance represents the net amount remaining in the account after subtracting the checks from the deposits.

Other factors are taken into account for determining the account balance, including direct credits and debits like bank transfers and charges for bank services.

Thus, the account balance can be utilized by Mr. Williams for his banking transactions in March.

<h3>Data and Calculations:</h3>

Total Deposits = $5,255 ($949 + $1419 + $1598 + $1289)

Total checks = $1,649 ($84 + $167 + $352 + $384 + $662)

Account balanced = $3,606 ($5,255 - $1,649)

Thus, based on the deposits and written checks, Mr. Williams' account balance at the end of the month is <u>$3,606</u>.

Learn more about account balances at brainly.com/question/2261596

#SPJ1

6 0
2 years ago
Select the choice that translates the following verbal phrase correctly to algebra:
maria [59]

w + 15 since increased by 15 means add on

12y + 11 since product of 12 and y means multiply 12 and y = 12y

one half n - 16 since one half of n and decreased by 1 6 , subtract 16

2b - 6 since Corinne is 6 years younger represented by b - 6

sum of their ages = b + b - 6 = 2b - 6

9h + 40

$ 9 per hour for h hours = 9 × h = 9h plus the $ 40 from carpool




7 0
3 years ago
I need help on 1-8 ..
notka56 [123]

Answer:

To begin this problem we call "the sum of the number" x. Now we have the equation 2(x)+5=20. This is the answer because it said to translate the equation. I think 2x+5+20 would be the correct translation.

4 0
3 years ago
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