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Juli2301 [7.4K]
3 years ago
14

Question in picture solve

Mathematics
2 answers:
Temka [501]3 years ago
8 0

Answer:

1:5

Step-by-step explanation:

30 divided by 6 is 5 and so are the rest

kiruha [24]3 years ago
3 0

Answer:

5

Step-by-step explanation:

10/2=5

20/4=5

hope this helps :3

if it did pls mark brainliest

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According to the Vivino website, suppose the mean price for a bottle of red wine that scores 4.0 or higher on the Vivino Rating
Natali [406]

Answer:

a) Null and alternative hypothesis

H_0: \mu=32.48\\\\H_a:\mu< 32.48

b) Test statistic t=-1.565

P-value = 0.0612

NOTE: the sample size is n=65.

c) Do not reject H0. We cannot conclude that the price in Providence for a bottle of red wine that scores 4.0 or higher on the Vivino Rating System is less than the population mean of $32.48.

d) Null and alternative hypothesis

H_0: \mu=32.48\\\\H_a:\mu< 32.48

Test statistic t=-1.565

Critical value tc=-1.669

t>tc --> Do not reject H0

Do not reject H0. We cannot conclude that the price in Providence for a bottle of red wine that scores 4.0 or higher on the Vivino Rating System is less than the population mean of $32.48.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the mean price in Providence for a bottle of red wine that scores 4.0 or higher on the Vivino Rating System is less than the population mean of $32.48.

Then, the null and alternative hypothesis are:

H_0: \mu=32.48\\\\H_a:\mu< 32.48

The significance level is 0.05.

The sample has a size n=65.

The sample mean is M=30.15.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=12.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{12}{\sqrt{65}}=1.4884

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{30.15-32.48}{1.4884}=\dfrac{-2.33}{1.4884}=-1.565

The degrees of freedom for this sample size are:

df=n-1=65-1=64

This test is a left-tailed test, with 64 degrees of freedom and t=-1.565, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=P(t

As the P-value (0.0612) is bigger than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

At a significance level of 0.05, there is not enough evidence to support the claim that the mean price in Providence for a bottle of red wine that scores 4.0 or higher on the Vivino Rating System is less than the population mean of $32.48.

<u>Critical value approach</u>

<u></u>

At a significance level of 0.05, for a left-tailed test, with 64 degrees of freedom, the critical value is t=-1.669.

As the test statistic is greater than the critical value, it falls in the acceptance region.

The null hypothesis failed to be rejected.

6 0
2 years ago
Which of the following is a geometric sequence?
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B isn’t. I can’t explain why it is but it is trust me.
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2 years ago
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Grace [21]

Answer:

y=1/2x+6

Step-by-step explanation:

y=mx+b

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3 years ago
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The probability is 1/2500. (1/50)*(1/50)
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3 years ago
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A farmer has a water tank for cows in the shape of a cylinder with radius of 7 ft and a
Molodets [167]

Answer:

92.36 ft³

Step-by-step explanation:

The volume of a cylinder is given by the following expression:

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The full volume of the cylindrical tank is:

V=3*\pi*7^2\\V=461.81\ ft^3

The sensor turns on when the volume reaches 20% of the total volume, the volume of the tank when the sensor turns on is:

S=0.20*V\\S=0.20*461.81\\S=92.36\ ft^3

The volume is 92.36 ft³.

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3 years ago
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