what is the significance of the equal sign?

Q: At the 2% level of significance, what is the decision?

A: Given : n1=10 , n2=10 , s1=22.4 , s2=12.0 , α=0.02 Our aim is to find the decision. Here , we use…

Q: a. A student performance in certain exam was 10/100, later he got a 98/100, discuss which is better…

A: Range is better than mean to reflect his performance because the mean of the two scores will not…

Q: The town of Butler, Nebraska, decided to give a teacher-competency exam and defined the passing…

A: Here we have to explain the given statement

Q: What is the difference between the interval and ratio levels of measurement in statistics? For…

A: There are four types of levels of measurement in statistics to represents the data. Which are,…

Q: Illustrate the Test R2 for significance?

A: Coefficient of determination: The coefficient of determination (r2) is the percentage of total…

Q: Explain the value of p?

A:

Q: How did you get p value from hats given?

A: Solution-: We have test statistic=t_{stat}=-2.115 and df=87 We want to find the how to get p-value=?…

Q: What is a? What is the power of the test?

A: Rejection region is that sum of Xi's less than or equal to 4 when the sample size is 4.

Q: What is the Mean of the Men group? how about the Women group?

A:

Q: 3. What is the difference between the altitude rule and the leg rule?

A: Difference between leg rule and altitude rule.

Q: What is the scale factor

A: Here we have to find the Scale factor,

Q: What is the main difference between z score and T score?

A: Z Score and T scores are both used in Hypothesis testing.  Z score is used while using z test and T…

Q: What is the range of Joey’s first 14 quiz grades? What is the range of Joey’s quiz grades after his…

A: a) Range of first 14 quiz Lowest value=74 Highest value=98   Range=Highest value-Lowest Value…

Q: What are the steps for Finding Proportions for One Score?

A:

Q: Carl earned grades of 62, 78, and 89 on four math tests. What is the mean of his grades?

A: The grades earned by Carl are : 62, 78 and 89 The number of grades, n=3 To evaluate : The mean of…

Q: Social network news In 2012, Pew Research noted that34% of young adults age 18 to 24 got some news…

A: It is given that difference in proportion is not significant.

Q: At the 0.01 level of significance, determine whether die is true (or unifor

A: Test is that whether die is true. It is given that Level of significance = 0.01 Number of times die…

Q: 39. What is the value of (EX)² for the scores: -1, 0, 3, 5?

A: Given that  The data are -1,0,3,5 Find the value (∑X)2

Q: Explain the reasons why we might have positive, negative z_scores? When is the z_ score equal 0

A:

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: Explain the concept of coefficient of Determination?

A: Coefficient of determination: The coefficient of determination is defined as the proportion of…

Q: The IQ score that separates the bottom 15% from the top 85% is P,5 =. (Round to the nearest…

A:

Q: What is the p value if the mean is 98.6, n=7, t= -2.114?

A: The P-value is the probability that provides strong evidence in favor of the alternative hypothesis.…

Q: 41. What is the value of EX + 1 for the scores: -1, 0, 2, 3?

A: Given data is -1,0,2,3

Q: What is the scale factor?

A:

Q: An article in the Archives of Internal Medicine reported that in a sample of 224 men, 73 had…

A: Here 224 men and 232 women are selected randomly. 73 of the men had elevated cholesterol levels,…

Q: What is the P value?

A: We have given that  p0=39/(32+39)=0.5493 α=0.05

Q: Asurvey of 125 freshmen business students at a local university produced the results isted below.…

A: Here use venn diagram

Q: product." What percentage of the respondents who disagree are in the 35-54 age group?

A: Here Given  Total number of Respondent=141=N Number of Respondent DIsagree=31=N(D) Number of…

Q: What is the value of ΣX2 for the scores 2, 4, and 5?

A: The scores are given as 2, 4, and 5.

Q: What is the correct decision for a test of the difference in two proportions if the test statistic…

A: It is given that the test statistic is 1.99.

Q: What is the formula to find the Mean?

A: The formula to find the mean as follows

Q: What is p value

A: From the given information, the test statistic value is 13.3289.

Q: The mean salary for 24 factory workers is ₱12 000. How much will one additional salary of ₱37 000…

A:

Q: АВС ~ ADY

A: Given That:- ΔABC ~ ΔADY AD=12, BD=8, DY=17, AY=15, CY=10, BC=x Now, AB=AD+BD AB=12+8 AB=20…

Q: Why does the use of multiple t tests increases?

A: The multiple t-tests are defined for a one-sample multivariate test and as well as for two samples.…

Q: What is the standard error for the difference between the two means

A: here from given information  For Private  sample mean = x¯  = 42.5  s2x = 48.7 nx =  10   For pubilc…

Q: What is the scale factor ?

A: Given ,  We have to find scale factor

Q: determine the alternative hypo, z-value

A: Here given,  Sample size n = 300 140 adults engaged to computer  so here p^ = 140300=0.466666= 0.47

Q: What is the p value ?

A: Note: As per the requirement solving  From the available information, The observed frequency for the…

Q: How many false negative were there? Explain the meaning of a false negative for the person tested.

A: The false negative indicate the situation when test shows negative result but the condition is…

Q: It is bleieved that the percent of convicted felons who have a history of juvenile deliquency is…

A: Solution: State the hypotheses Null hypothesis: That is, the percent of convicted felons who have a…

Q: 14 16 21 25

A: We have given that  Box plot  Min = 9  Q1= 14 Q2= median = 16  Q3 = 21 Max= 25

Q: Explain what it means if the z-score of an exam score is -1.2.

A: The z-score denotes the number of standard deviations from the mean.

Q: What is the mean of the numbers 0.1, 0.11, and 0.111?

A: 0.1 + 0.11 + 0.111 = 0.321

Q: What is the Scale factor

A: The old coordinates B=(0,2), C=(3,0) So the length of BC=(0-3)2+(2-0)2=9+4=13 The new coordinates…

Q: What is the relationship between R sqare and p-value?

A: Relationship between R square and p-value

Q: What is the formula of a mean

A: we have to writte the fomula of a mean

Q: What percentage of IQ's are: a Greater than 95? b. Less than 120? c. Between 90 and 110?

A: Let X be the random variable from Normal distribution with mean (μ) = 100 and standard deviation (σ)…

Q: What is the value of ΣX for the scores 2, 5, 3?

A: Given data2,5, 3ΣX = 2+5+3 = 10