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3 years ago

3. Gach Perry is conducting an inventory of the PE equipment at OCS. He counts

Mathematics

1 answer:

dem82 [27]3 years ago

4 0

Answer:

my badddd

Step-by-step explanation:

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In clinical trials of a newly developed cold medicine, it was found that 45 out of 200 individuals that took the new medicine (G

ddd [48]

Answer:

Step-by-step explanation:

Group 1 Information:

sample size : n₁ = 200

individuals with stomach as a side effect x₁ = 45

p₁ = 45 / 200 p₁ = 0,225 then q₁ = 1 - p₁ q₁ = 0,775

Group 2 Information:

sample size : n₂ = 150

individuals with stomach as a side effect x₂ = 33

p₂ = 33/150 p₂ = 0,22 q₂ = 0,78

Hypothesis Test:

Null Hypothesis: H₀ p₁ = p₂

Alternative Hypothesis Hₐ p₁ > p₂

The alternative hypothesis indicates that the test is a one-tail test to the right

Significance level is α = 0,01 ( confidence interval 99%)

From z-table we get z(c) for that α z(c) = 2,32

To calculate z(s)

z(s) = ( p₁ - p₂ ) / EED

EED = √ ( p₁*q₁)/n₁ + ( p₂*q₂)/n₂

EED = √ ( 0,225*0,775)/200 + (0,22*0,78)/150

EED = √ 0,0008718 + 0,001144

EED = 0,045

z(s) = ( 0,225 - 0,22 ) / 0,045

z(s) = 0,005 / 0,045

z(s) = 0,11

Comparing z(s) and z(c)

z(s) < z(c) 0.11 < 2.32

Then z(s) is in the acceptance region. We accept H₀ . We don´t have evidence to support differences between the two groups.

6 0

3 years ago

Which expression is equivalent to 1/2 (13f+5)?

jeka94

The answer is B. 6.5f+2.5 because 13/2 is 6.5 and 5/2 is 2.5

4 0

2 years ago

Determine if the lim f(x) exists using the graph below.. If it does, find its value. If it does not,x 1explain why

Leno4ka [110]

The limit of a function f at a point a exists if:

$\lim_{x\to a^-}f(x)=\lim_{x\to a^+}f(x)$ $\begin{gathered} \text{ From the given image, the value of the left limit of f at x=1 } \\ \lim_{x\to a^-}f(x)\lt1 \end{gathered}$

Also,

$\begin{gathered} \text{ From the given image, the value of the right limit of f at x=1 } \\ \lim_{x\to a^+}f(x)\gt1 \end{gathered}$

Therefore,

$\lim_{x\to1^-}f(x)\lim_{x\to1^+}f(x)$

Hence, the limit does not exist

8 0

1 year ago

The height meters of a mass projected vertically upwards at a time seconds s=ut-0.5gt².

Sergeu [11.5K]

9514 1404 393

Answer:

t ≈ 0.590 s (ascent); 5.532 s (descent)

Step-by-step explanation:

We are interested in the values of t when s=16.

s = 30t -4.9t²

4.9t^2 -30t +16 = 0 . . . . . substitute 16 for s; put in standard form

The quadratic formula can be used to find the solutions:

t = (-(-30) ±√((-30)² -4(4.9)(16)))/(2(4.9))

t = (30 ±√586.4)/9.8 ≈ 0.59023, 5.53221 . . . . seconds after launch

a) It will take 0.590 seconds to reach 16 m height initially.

b) It will take 5.532 seconds to return to 16 m height on descent.

3 0

3 years ago

3,060 divided by 90 with a remainder

sasho [114]

Answer:The answer is 34 with no remainder.

Step-by-step explanation:When you divide 3060 by 90 you get a whole number of 34 with no remainder.

6 0

3 years ago

Read 2 more answers