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stepladder [879]
3 years ago
13

4. A coin is tossed 4 times. What is the probability of getting exactly 3 heads?

Mathematics
2 answers:
aalyn [17]3 years ago
5 0

Answer:1/2, 50%, 2/4

Step-by-step explanation:a coin has two sides and your tossing it 4 times so you just divide it by 2 and you get 2

Veseljchak [2.6K]3 years ago
3 0

Answer:

A coin is tossed 4 times. So the sample space is {HHHH, HHHT, HHTT, HTTT, TTTT, TTTH, TTHH, THHH, HTHT, THTH, HTHH, HHTH, HTTH, THHT, THTT, TTHT}

There are 16 sample points. This can be found out by knowing how many objects(or times the same object) is tossed/rolled(for a dice). Sample points = (Outcomes)^no. Of times

16 = 2^4

The answer is 4/16 = 1/4

Hope this helps!

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Excel computes a two‑sample confidence interval for the difference in proportions just as well and as easily as Minitab and othe
True [87]

Answer:

See ecplanation below

Step-by-step explanation:

False.

On the Data analysis tool from excel we can conduct the following procedures:

Anova: Single Factor

Anova: Two factor with replication

Anova: Two factor without replication

Correlation

Covariance

Descriptive statistics

Exponential smoothing

F-test Two sample for Variances

Fourier analysis

Histogram

Moving Average

Random number generation

Rank and percentile

Regression

Sampling

t test: Paired two sample for means

t tes: Two sample assuming equal variances

t test: Two sample Assuming Unequal Variances

z test: Two sample for means

And as we can see we don't have an specific procedure just to obtain confidence interval for the difference of proportions. We need to remember that if we select a z test in excel, for example the output will contain the confidence associated to the parameter, but for this case is not too easy obtain a confidence interval for the difference of proportion like on a statistical software as (Minitab, R, SAS, etc) since all of these statistical softwares are elaborated in order to conduct all the possible statistical tests and confidence intervals for parameters of interest.

5 0
3 years ago
Find the slope between the two given points (-5,7) and (-5,11)
BartSMP [9]

Answer:

Slope (m) = infinity

Step-by-step explanation:

3 0
4 years ago
-10=-4+2x how do we solve this?
Dafna1 [17]
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4 years ago
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3 years ago
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Use the graph to determine the number of solutions the system has. x=4 y=x+3
Lyrx [107]

Answer:

Final answer is x=4, y=7.

Step-by-step explanation:

Questions says to use the graph to determine the number of solutions the system has. where system of equations are x=4 and y=x+3

any equation of the form x=k is a vertical line crossing x-axis at k.

So x=4 is a vertical line crossing x-axis at 4.

y=x+3 has slope m=1 and y-intercept b=3

So it passes through point (0,3) and for slope m=1, rise 1 up then 1 right to get new point.

Then final graph is given as shown in the picture.

We can see that both lines intersect at point (4,7).

Hence final answer is x=4, y=7.

4 0
3 years ago
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