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MArishka [77]
3 years ago
7

Students were surveyed about their favorite kind of frozen yogurt

Mathematics
1 answer:
Oxana [17]3 years ago
5 0
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AnnyKZ [126]
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3 years ago
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The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed
OlgaM077 [116]

Answer:

Test is Left tailed test

Parameter tested is standard deviation

Step-by-step explanation:

We are given the hypothesis as;

Null hypothesis; H0: σ = 8.6

Alternative hypothesis; H1: σ < 8.6

Where;σ is a constant generally known in statistics as the standard deviation.

Now, it's the alternative hypothesis that will let us know whether this is left tailed, right tailed or two tailed.

Alternative hypothesis says σ < 8.6.

This means that the values of σ that satisfy this hypothesis are less than 8.6 and thus are on the left hand side of 8.6 on a number line. Thus, the shaded region in a normal distribution curve will be on the left.

Thus, it's a left tailed test

3 0
3 years ago
4. Use the distributive property to simplify : 12(2−6).
olasank [31]

Answer:

-48

Step-by-step explanation:

12 x 2=24

12 x 6= 72

24 - 72 = -48

7 0
3 years ago
Round to the nearest hundredth if necessary. <br> 2 qt =______ mL<br> help me pleaseeeee
Rasek [7]
It would be 1892.71      
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3 years ago
Afla de cate ori se cuprinde 8 in fiecare dintre numerele 8 ,80,72si 96
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I don't understand the language
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