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3 years ago

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For a certain instant lottery game comma the odds in favor of a win are given as 9 to 91 . Express the indicated degree of likel

ihood as a probability value between 0 and 1 inclusive.

1 answer:

Viktor [21]3 years ago

8 0

I didn't understand you question.
Can you please help me to understand then I can easily answer it.
Thanks!!!

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Results from previous studies showed 76% of all high school seniors from a certain city plan to attend college after graduation.

Degger [83]

Answer:

Yes, this indicate that the percentage has increased from that of previous studies.

Step-by-step explanation:

We are given that Results from previous studies showed 76% of all high school seniors from a certain city plan to attend college after graduation.

A random sample of 200 high school seniors from this city reveals that 162 plan to attend college.

<em>Let p = % of all high school seniors from a certain city who plan to attend college after graduation</em>

SO, <u>Null Hypothesis</u>, $H_0$ : p $\leq$ 76% {means that the percentage has not increased from that of previous studies}

<u>Alternate Hypothesis,</u> $H_a$ : p > 76% {means that the percentage has increased from that of previous studies}

The test statistics that will be used here is <u>One-sample z proportion statistics</u>;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of high school seniors from this city who

plan to attend college = $\frac{162}{200}$ = 0.81

n = sample of high school seniors = 200

So, <u><em>test statistics</em></u> = $\frac{0.81-0.76}{{\sqrt{\frac{0.81(1-0.81)}{200} } } } }$

= 1.8025

<em>Now at 5% significance level, the z table gives critical value of 1.6449 for right-tailed test. Since our test statistics is more than the critical value of z so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region.</em>

Therefore, we conclude that the percentage has increased from that of previous studies.

4 0

2 years ago

What’s the multiplier for $2 and 3%

miss Akunina [59]

To find 3% of $2 you would first see what 10% is. therefore the mutiplier here would be .3

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Svetlanka [38]

Answer:

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Step-by-step explanation:

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deahawn has a box of crackers shaped in a rectangular prism. The volume of crackers is 432 inches the area of the base 32 inches

iogann1982 [59]

432/32 = 13.5 inches cubed

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2 years ago

The function g(x) = –3x2 – 36x – 60 written in vertex form is g(x) = –3(x + 6)2 + 48. Which is one of the transformations applie

nikklg [1K]

The general vertex form is this:
v(x) = a (x-h)2 + k
where (h,k) is the coordinates of the of vertex.
and a indicates the widening or shrinking of the function compared to another parabolic function. If a become bigger, the graph becomes narrower. If a becomes negative, the graph is reflected over the x-axis.

Comparing f(x) = x2 with g(x) = -3(x+6)2 + 48, we have the following transformations:
The graph is reflected over the x-axis
The graph is made narrower.
The graph is shifted 6 units to the left.
The graph is shifted 48 units up.

From the choices we only have:
<span>The graph of f(x) = x2 is made narrower</span>

6 0

2 years ago