MATHEMATICS COLLEGE

Jack bought a sweater at a sale price of $15. The original cost of the sweater was $50. What percent represents the discount that Jack received when buying the sweater? *

Answers

Answer 1
Answer:

Answer:

The sweater was 30% off

Step-by-step explanation:

To find this answer you need to simply dived 15  ÷ 50 to get the answer of 0.3 and 0.3 as a percent would be 30 making the sweater 30% off

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61+r=122 so what is r please help quickly​

Answers

Answer:

it's 61+61

Step-by-step explanation:

i hope this helps

A university administrator was interested in determining if there was a difference in the distance students travel to get from class from their current residence(in miles). Men and women at UF were randomly selected. The Minitab output is below. What is the best interpretation for the output? Difference = mu (F) - mu (M) T-Test of difference = 0 (vs not =): T-Value = -1.05 P-Value = 0.305 DF = 21

Answers

Answer:

1) Fail to reject the Null hypothesis

2) We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

Step-by-step explanation:

A university administrator wants to test if there is a difference between the distance men and women travel to class from their current residence. So, the hypothesis would be:

H_(o): \mu_(F)-\mu_(M)=0\n\n H_(a): \mu_(F)-\mu_(M)\neq 0

The results of his tests are:

t-value = -1.05

p-value = 0.305

Degrees of freedom = df = 21

Based on this data we need to draw a conclusion about test. The significance level is not given, but the normally used levels of significance are 0.001, 0.005, 0.01 and 0.05

The rule of the thumb is:

  • If p-value is equal to or less than the significance level, then we reject the null hypothesis
  • If p-value is greater than the significance level, we fail to reject the null hypothesis.

No matter which significance level is used from the above mentioned significance levels, p-value will always be larger than it. Therefore, we fail to reject the null hypothesis.

Conclusion:

We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

Final answer:

The Minitab output from the t-test signifies that there is no statistically significant difference in the distances traveled by men and women at UF to get to class. The t-value and p-value obtained don't give enough evidence to reject the null hypothesis. The degrees of freedom (DF) indicate the number of independent observations in the sample.

Explanation:

The output from Minitab that you've shared is the result of a paired t-test comparing the mean distances traveled by men and women to get to class at UF. The null hypothesis in this context is that there is no difference in the average distances traveled by men and women (Difference = mu (F) - mu (M)). The t-value of -1.05 and the p-value of 0.305 do not provide enough evidence to reject the null hypothesis at the conventional 0.05 level of significance. Therefore, we could interpret the output as not detecting a statistically significant difference between the mean distances men and women travel to get to class at UF.

The 'DF' or degrees of freedom, indicates the number of independent observations in your sample that are free to vary once certain constraints (like the sample mean) are calculated. In this case, DF = 21, which is the sample size (pairs of men and women) minus 1.

Learn more about t-test here:

brainly.com/question/35161872

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Find the value of X, I need help solving this

Answers

Answer:

C) 8

Step-by-step explanation:

41 + 6x + 1 = 90° because this is a right angle

42 + 6x = 90 subtract 42 from both sides

6x = 48 divide both sides by 6

x = 8

Answer:

the answer should be c

Step-by-step explanation:

180-90=90

90-41=49

49-1=48

48:6=8

x=8

What is the difference of rational expressions below 6x/x-3 - 5/x

Answers

Answer:

$ (6x^2-5x+15 )/(x^2-3x) $

Step-by-step explanation:

$(6x)/(x-3) -(5)/(x) $

$(6x(x))/(x(x-3)) -(5(x-3))/(x(x-3)) $

$(6x^2)/(x^2-3x) -(5x-15)/(x^2-3x) $

$ (6x^2-5x+15 )/(x^2-3x) $

Over the last 100 business days, harry had 20 customers on 30 of those days, 25 customers on 20 days, 35 customers on 30 days, 40 customers on 10 days, and 45 customers on 10 days. what is the variance of the number of harry's customers?

Answers

Variance = sum of all x terms (x1 - mean of x)^2 / n
the mean is the average: 20 + 25 + 35 + 40 + 45 /5 = 165/5 = 33
v = (20-33)^2 / 5 + (25-33)^2 / 5 + (35-33)^2 / 5 + (40-33)^2 / 5 + (45-33)^2 / 5
v = 33.8 + 12.8 + 0.8 + 9.8 + 28.8
v = 86

What is the value of P+Q+R+S?

Answers

The question is not clear at all
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