Hypothesis: Standard Deviation and Critical Value
1.If the test value in the figure below is 2.57 when the critical value is 1.96, what decision about the hypothesis should be made?
A)reject the null hypothesis 
B)accept the null hypothesis 
C)reject the alternative hypothesis 
D)not enough information 
2.The standard error of difference is .
A)True
B)False
3.In the figure below, if the test value is 1.43, the null hypothesis should not be rejected. 
A)True
B)False
4.When hypothesizing a difference of 0, if the confidence interval does not contain 0, the null hypothesis is rejected.
A)True
B)False
5.For normally distributed populations, if the samples are …show more content…
A)3.1 
B)9.61 
C)49.5 
D)7.03 
25.Samples are independent when they are not related.
A)True
B)False
26.A pooled estimate of the variance is a weighted average of the variance using the two sample variances and the __________ of each variance as the weights.
Use the following to answer questions 2729:
Mauricio Cruz, a wine merchant for Cruz's Spirits Emporium, wants to determine if the average price of imported wine is less than the average price of domestic wine. The data obtained is shown in the table below.
Imported WineDomestic Wine 7.039.78 2.313.62 1516 
27.What is the null hypothesis? Use .
A) 
B) 
C) 
D) 
28.What is the critical value? Use .
A)–1.761 
B)–2.045 
C)–1.697 
D)–1.703 
29.What is the test value? Use .
A)–6.97 
B)–2.50 
C)–4.53 
D)–2.54 
30.Determine the value of as shown in the figure below, if the degrees of freedom were seven and nine.
A)0.01 
B)0.025 
C)0.05 
D)0.1 
31.If the variances are not known and one or both sample sizes are less than 30, the test must be used.
A)True
B)False
32.The formula for the  test for comparing two means (independent samples, variances equal) is: .
A)True
B)False
33.A local charity thinks that people in River Heights

Standard Deviations Use In The Business World
1744 Words  7 PagesStandard Deviation use in the Business World Abstract This paper evaluates the role of standard deviation in business. As part of the evaluation, a brief summary of five different peer reviewed papers has been presented. Topics such as, the purpose of the study, the research questions, the hypothesis of the study, and the main findings of the study for the five papers, have been summarized by each of the learning team members. Standard Deviation use in the Business World Standard Deviation…

Statistics: Statistical Hypothesis Testing and Critical Value
1873 Words  8 Pagesthe coefficient of correlation. Coefficients Standard Error t Stat Pvalue Intercept 59.95717345 28.65750326 2.092198085 0.062896401 Home Size 31.69164882 24.44661008 1.296361692 0.223968044 The formula for the coefficient of correlation, . = 0.076. a. Compute the coefficient of correlation is .308 b. Determine the coefficient of determination. Regression Statistics Multiple R 0.37931016 R Square 0.143876197 Adjusted R Square 0.058263817 Standard Error 15.25058359 Observations 12 The coefficient…

Standard Deviation and Cash Flow
1680 Words  7 Pagesyou are risk averse and have the following three choices. Which project will you select? Compute the coefficient of variation for each.  Expected Standard   Value Deviation  A $1,800 $900  B 2,000 1,400  C…

Standard Deviation and High School Seniors
1255 Words  6 Pagesgraduation. A random sample of 200 high school seniors from this city reveals that 162 plan to attend college. Does this indicate that the percentage has increased from that of previous studies? Test at the 5% level of significance. Compute the z or t value of the sample test statistic.    A. z = 0.69     B. t = 1.645     C. z = 1.96     D. z = 0.62   Reset Selection  Question 3 of 10  1.0 Points  Consider the following scenario in answering questions 1…

Standard Deviation
1170 Words  5 PagesDeviation Definition: Behavior commonly seen in children that is the result of some obstacle to normal development such behavior may be commonly understand as negative (a timid child, a destructive child) or positive (a quite child), both positive and negative deviation will disappear once the child begins to concentrate on a piece of work freely chosen by him. The physical deforms are easier to identify. This can be by birth due to an accident etc… and most such physical deforms…

Standard Deviation and Data
2964 Words  12 PagesMEASURES MULTIPLE CHOICE QUESTIONS In the following multiple choice questions, circle the correct answer. 1. Which of the following provides a measure of central location for the data? a. standard deviation b. mean c. variance d. range Answer: b 2. A numerical value used as a summary measure for a sample, such as sample mean, is known as a a. population parameter b. sample parameter c. sample statistic d. population mean Answer: c 3. Since the population…

Standard Deviation
1154 Words  5 PagesI'll be honest. Standard deviation is a more difficult concept than the others we've covered. And unless you are writing for a specialized, professional audience, you'll probably never use the words "standard deviation" in a story. But that doesn't mean you should ignore this concept. The standard deviation is kind of the "mean of the mean," and often can help you find the story behind the data. To understand this concept, it can help to learn about what statisticians call normal distribution of…

Mean and Standard Deviation
1215 Words  5 PagesMean and Standard Deviation The mean, indicated by μ (a lower case Greek mu), is the statistician's jargon for the average value of a signal. It is found just as you would expect: add all of the samples together, and divide by N. It looks like this in mathematical form: In words, sum the values in the signal, xi, by letting the index, i, run from 0 to N1. Then finish the calculation by dividing the sum by N. This is identical to the equation: μ =(x0 + x1 + x2 + ... + xN1)/N. If you are not already…

Normal Distribution and Standard Deviation
1399 Words  6 PagesStudent Exploration: Sight vs. Sound Reactions Vocabulary: histogram, mean, normal distribution, range, standard deviation, stimulus Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Most professional baseball pitchers can throw a fastball over 145 km/h (90 mph). This gives the batter less than half a second to read the pitch, decide whether to swing, and then try to hit the ball. No wonder hitting a baseball is considered one of the hardest things to do in sports! 1. What are some…

Standard Deviation and Percentage Essay
6614 Words  27 PagesPatrons12 Table 5 Relationship Measures of Remington’s Steakhouse Patrons12 Table 6 Patron Perception Verses Importance Ratings13 Table 7 Correlation of Customer Satisfaction and Perception Measures13 Table 8 Regression Pvalues on Perception Measures14 Table 9 Regression Pvalues on Perception Measures without Quick Service15 Table 10 Correlation Results for the Perception Questions22 Table 11A – 11H Summary Statistics22 Table 12 Summary Output30 Introduction Remington’s Steakhouse is a single…
More about Hypothesis: Standard Deviation and Critical Value

Standard Deviations Use In The Business World
1744 Words  7 Pages 
Statistics: Statistical Hypothesis Testing and Critical Value
1873 Words  8 Pages 
Standard Deviation and Cash Flow
1680 Words  7 Pages 
Standard Deviation and High School Seniors
1255 Words  6 Pages 
Standard Deviation
1170 Words  5 Pages 
Standard Deviation and Data
2964 Words  12 Pages 
Standard Deviation
1154 Words  5 Pages 
Mean and Standard Deviation
1215 Words  5 Pages 
Normal Distribution and Standard Deviation
1399 Words  6 Pages 
Standard Deviation and Percentage Essay
6614 Words  27 Pages