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m_a_m_a [10]
3 years ago
12

Alexa Alexa brought 32 apples for $4.16 at the rate what 1 Apple cost​

Mathematics
1 answer:
Mice21 [21]3 years ago
6 0

Answer:0.13

Step-by-step explanation:i think

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A study is performed in San Antonio to determine whether the average weekly grocery bill per five-person family in the town is s
bogdanovich [222]

Answer:

No, the sample evidence is not statistically significant (P-value = 0.125).

To reject the null hypothesis, the P-value has to be smaller than the significance level, so the significance level to reject the null hypothesis has to be 0.125 or higher.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

Then, the null and alternative hypothesis are:

H_0: \mu=131\\\\H_a:\mu\neq 131

The significance level is 0.05.

The sample has a size n=50.

The sample mean is M=133.474.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=11.193.

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

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{11.193}{\sqrt{50}}=1.583

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{133.474-131}{1.583}=\dfrac{2.474}{1.583}=1.563

The degrees of freedom for this sample size are:

df=n-1=50-1=49

This test is a two-tailed test, with 49 degrees of freedom and t=1.563, so the P-value for this test is calculated as (using a t-table):

P-value=2\cdot P(t>1.563)=0.125

As the P-value (0.125) is bigger than the significance level (0.05), the effect is  not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

8 0
2 years ago
Please help me understand and answer this !!!!!!!!!!!!!!!!!
-Dominant- [34]

Answer:

5 + 8 = 13

-6 + -4 = -10

No explaination needed This answer is 1000% correct. Trust me i woould never mess someone up for no reason, not even for my own benefit.

4 0
3 years ago
a college employs 15 stewards. what is the average monthly wage of the stewards if the college pays 226.20 naira in wages each m
Kitty [74]
What are the options
6 0
2 years ago
What is the slope intercept form of the equation 12x-4y=-20 y=3x+5 y=-3x-5 y=12x-20 y=20y-12x
lyudmila [28]

Answer:

3x+y=16

x+6y=5

6x+2y=8

Step-by-step explanation:

8 0
3 years ago
|-5| – |-2| how do you do this. so you know this is high school work
makvit [3.9K]
=3
The absolute value of any number is ALWAYS positive. Negatives get changed to positives.
5-2=3 
8 0
3 years ago
Read 2 more answers
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