Question 5 Germination of a seed commences with the uptake of water and is completed with the appearance of the embryo, in most species radical first, through the surrounding structures. Table 1 gives data regarding germination rates for treated and untreated seeds. (a) (b) Table 1: Germination rates for treated and untreated seeds Germinated Not Germinated 85 120 At 1% significance level, is the germination rate the same for the treated and the untreated seed? (c) Treated Untreated 15 30 State a suitable null and alternative hypotheses for the problem. Test the hypotheses in part (a) by using x² test. Write your conclusion.
Q: A random sample of students was surveyed and asked to list their grade level and what movie genre…
A: Given that, a random sample of students was surveyed and asked to list their grade level and the…
Q: How do I apply a normal curve to a sample of test scores. n=50 range=27 min=72 max=99 mean=85.94…
A: Given information: The descriptive statistics for the sample of test scores is given.
Q: A random sample of 202 shoppers at bluewater were asked why they chose to stop at location. 93…
A: Given that Sample size n =202 Favorable cases x =93
Q: Hi, where is the 2.66 coming from?
A:
Q: A researcher is interested in investigating the relationship between sugar consumption and weight…
A: Given Information: A researcher is interested in examining the relationship between high school…
Q: A magazine includes a report on the energy costs per year for 32-inch liquid crystal display (LCD)…
A: a) Suppose σ2 is the population variance of energy costs per year for 32-inch liquid crystal…
Q: Use a t-test to test the claim about the population mean µ at the given level of significance a…
A: Given,Sample size(n)=16sample mean(x¯)=52,722Standard deviation(s)=1600Claim : μ=52,500and…
Q: To investigate the fluid mechanics of swimming, twenty swimmers each swam a specified distance in a…
A: Given that We have to find t test statistic and p value
Q: a) A drama school has 78 teachers. As seen on the table below, out of all teachers 42 teach…
A: Sampling technique is used to take sample from the larger population. It is broadly of two types…
Q: Before changes to its management staff, an automobile assembly line operation had a scheduled mean…
A: The question is about hypo. testing for a popl. mean Given : Popl. mean time of completion ( μ ) =…
Q: e Sq Feet 1512 1023 2436 3559 Beds 3245 3 2 4
A: The linear correlation between x and y is described by its correlation coefficient, which provides…
Q: A therapist was interested in determining whether patients experiences reduced anxiety following…
A: Sample size N = 9 We have to use repeated samples t-test.
Q: The owner of a chain of mini-markets wants to compare the sales performance of two of her stores,…
A: (a) Hypotheses: H0:μd=0H1:μd≠0
Q: Compute the test statistic. Please show your work. 12pt BIUA Paragraph Y ▾ Y Y LE X !!! fami 111…
A: from given data We have : For first treatment group : n1=31, Mean of first treatment group = x1=32,…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: Solution: Given information: n=15 Sample size x= 79.2 Sample mean s= 23.1 Sample standard deviation…
Q: ative hypothesis. You must use statistical notation to expre
A: Hypothesis Testing: In many instances, a business researcher wants to test the differences in the…
Q: Suppose that in a large lecture class of 800 students, 520 students (65%) attend the lecture…
A: Given Information: In a large lecture class, 65% attend the lecture regularly i.e., p=0.65 Sample…
Q: A dataset contains data on birth weights of 65535 babies born in June 1997 along with variables that…
A:
Q: Suppose that the duration of a particular type of criminal trial is known to be normally distributed…
A:
Q: The lengths of adult males' hands are normally distributed with mean 187 mm and standard deviation…
A:
Q: How can I perform a confidence interval for female students graduating Total# of female students:…
A: Given: Total number of female students N = 36,143 Total number of female graduates n = 27436 Sample…
Q: 13. Last year, television station WXYZ's share of the 11 P.M. news audience was approximately 25…
A: Last year, television station WXYZ's share of the 11 P.M. news audience was approximately 25…
Q: The operations manager of a large production plant would like to estimate the average amount of time…
A: The standard deviation is 7 minutes; σ=7minutes Margin of error=22 seconds Confidence level is…
Q: Test the claim about the population mean, μ, at the given level of significance using the given…
A: GivenMean(x)=38.1standard deviation(σ)=3.95sample size(n)=64significance level(α)=0.08claim is μ=40
Q: If X represents a random variable coming from a normal distribution with mean 3 and if P(X> 4.6) =…
A:
Q: 4) Test the claim that Reviews and Midterm have the same mean. Reviews 11= X= S= Midterm n= x= S=
A: The objective is to test the claim that reviews and midterm have the same mean.
Q: The McGranger Mortgage Company is interested in monitoring the performance of the mortgage process.…
A: Process Capability Index: The ratio between the duration of the acceptance interval and six times…
Q: ← Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance…
A: The level of significance is α = 0.02.
Q: Test the claim that the average weight of a new SUV is 1,940 kg, if a sample of 309 vehicle weights…
A: Given,sample size(n)=309sample mean(x¯)=1,931standard deviation(s)=61.7α=0.05and degrees of…
Q: b) Within 5 cm of the mean, P(115 < X < 125).
A:
Q: QUESTION 1 a) Determine whether the following statement is TRUE or FALSE. i) Brand of fertilizer is…
A: Given that: Four statements are provided to check whether they are correct or not.
Q: (d) Given that the wafer is from Lot C, what is the probability that it is nonconforming? (e) Given…
A: Probability: The likelihood of random events whose occurrence is not defined is evaluated by using…
Q: If the class has 670 points in total, how much I need to pass with the 70%?
A: Formula to calculate the percentage (%) value defined as shown below…
Q: There are three dice rolled at the same time. b. How many possible outcomes are there if the desired…
A:
Q: Beth wants to determine a 99% confidence interval for the true proportion of high school students in…
A: Suppose p is the true proportion of high school students in that area who attend their home…
Q: What does the result suggest? A. The result suggests the event did not occur. B. The result…
A: From given data: Mean μ=268, standard deviation σ=15
Q: An IQ test is developed such that the mean quotient is 100 and standard deviation is 12. It is given…
A: According to the given information in this question There are more than three subparts according to…
Q: An article appeared in an Australian newspaper. It described a study of academic performance and…
A:
Q: Suppose a group is interested in determining whether teenagers obtain their drivers licenses at…
A: Given,
Q: a) 99.7% of the widget weights lie between and b) What percentage of the widget weights lie between…
A: It is given that Mean, μ = 37 Standard deviation, σ = 6
Q: 12.41 Race and Ethnicity. The U.S. Census Bureau allows each person to choo from a long list of…
A: Hello! As you have posted 2 different questions (12.41 and 12.42/43/44), we are answering the first…
Q: Martha's Vineyard Marine Supply is a wholesaler for a large variety of boating and fishing…
A: First we enter the given data set in excel sheet. Material handling department costs depend on the…
Q: E1 H0: ≤ 144 Ha: > 144 (Genius) Sample size n = 121 Sample size me
A: Given that Sample size n = 121 Sample size mean = 147 p-value = 0.0059
Q: The level of cretaine phosphokinase (CPK) in blood samples measures the amount of muscle damage for…
A: The degrees of freedom is, df=n-1 =25-1 =24 Using Excel formula "=T.INV(1-(0.005/2),24)", the…
Q: The overhead reach distances of adult females are normally distributed with a mean of 195 cm and a…
A: Given,mean(μ)=195standard deviation(σ)=8sample size(n)=25
Q: You have been asked to select at least 3 out of 7 possible sites for oil exploration. Designate each…
A: Given data you have been asked to select at least 3 out of 7 possible sites for oil exploration.
Q: Please find the binomial coefficient for the below: (10¦4) (12¦3
A: The objective is to find the binomial coefficient for the following: (10¦4) (12¦3)
Q: lower limit and upper limit of the 90% confidence interval. nal places (If necessary, consult a list…
A:
Q: The number of fire calls in a day at a fire department is recorded for 100 randomly selected days.…
A: Given: Number of calls Number of days 0 15 1 20 2 17 3 21 4 9 5 10 6 8 100…
Q: 3 S 9 B 32454 535 389 229 459 1 440
A: We know that a statistical indicator of the strength of the association between two variables'…
Step by step
Solved in 2 steps
- QUESTION 12 Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the previous 6 months, in a sample of 115 new-car buyers, 46 have traded in their old car. To determine (at the 10% level of significance) whether the proportion of new-car buyers that trade in their old car has statistically significantly decreased, what can you conclude concerning the null hypothesis? Reject the null hypothesis Fail to reject the null hypothesisQUESTION 12 Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the previous 6 months, in a sample of 115 new-car buyers, 46 have traded in their old car. To determine (at the 10% level of significance) whether the proportion of new-car buyers that trade in their old car has statistically significantly decreased, what can you conclude concerning the null hypothesis?In Table 11.2 the estimated coefficient on black is 0.084 in column (1),0.688 in column (2), and 0.389 in column (3). In spite of these large differences, all three models yield similar estimates of the marginal effect of race on the probability of mortgage denial. How can this be?
- Question 8:Research at the University of Toledo indicates that 50% of students change their major area of study after their first year in a program. A random sample of 100 students in the College of Business revealed that 48 had changed their major area of study after their first year of the program. Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the .05 level of significance.QUESTION 3 The Research Unit for Cecilion Supermart conducted an experiment to estimate the strength of thecarrier bag from the starch-based biofilms made from two different jicamas (sengkuang) of type Aand type B. However, the researcher claims that jicama type A produces more strength comparedto type B. To support this claim, 10kg weight item was put into 100 carrier bags made from jicamatype A and 200 carrier bags made from jicama type B were randomly selected. As a result, 8 bagsfrom jicama type A burst while 12 bags from jicama type B burst. Calculate a 95% confidenceinterval for the difference in true proportion of the carrier bags which burst between jicama type Aand type B. Give comment on the parameter estimate.QUESTION 19 To study whether the students at a university are more or less satisfied with the current food service compared to the previous food service, a sample of 90 current students is taken and finds that 37 are satisfied with the current food service. A similar survey was taken for the previous food service in which 89 students surveyed found that 40 were satisfied with the previous food service. When testing the hypothesis (at the 5% level of significance) a higher percentage of students were satisfied with the previous food service than with the current food service, what is the test statistic? (please round your answer to 2 decimal places)
- Question 7 Consider a cohort study to compare the mortality rate of myocardial infarction (MI) in men with sedentary work (exposed group) to men with physically active work (unexposed). If in the exposed, there were 36,000 person (man) years of observation and 126 deaths whereas the unexposed had 24,000 man-years of observation and 44 deaths. Compute the following a) Mortality rate in each cohort? b) What is the relative risk of dying, comparing these 2 groups? c) What is the attributable risk of sedentary work? d) What is the attributable benefit of physical activity? e) If we assume that MI is associated with the mortality in this cohort (causality), what proportion of the disease in the higher group is potentially preventable?Compare the two separate scatterplots. In particular, how do the associtation compare between women with pets vs. women without pets? Does one group have more variation in systolic blood pressure than the other? If so, for which group? Does systolic blood pressure seem higher for common ages between the two groups? If so, for which group?Question No. 03: Research at the University of Toledo indicates that 50% of students change their major area of study after their first year in a program. A random sample of 100 students in the College of Business revealed that 48 had changed their major area of study after their first year of the program. Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the .05 level of significance.
- Question 02 There is a claim that drink driving has been very common in high ways. The Highway Police randomly caught 300 drivers for breath alcohol test and found that 14% of drivers have breath alcohol over the legal limit. At 4% level of significance, use the p-value approach to test the hypothesis that the percentage of drivers who are drink driving is more than 10%.Question 1) Consider the following context: The nutrition and food science division of Farnsworth Pharmaceuticals is alpha testing an OTC diagnostic kit so that adults who self-report a certain food allergy can affirm their insensitivity to that food allergen. Preliminary clinical trials yielded that 25% of the volunteers who suspected they had food allergies were clinically identified as sensitive or intolerant to the food allergen; unfortunately and disappointingly, only 10% of those who tested positive in the clinic also tested positive with the kit. Furthermore, of those self-reporting adult volunteers who had a negative clinic outcome, 5% tested positive anyway with the kit. How many complete branches, from start to finish, would a tree diagram that models this context include? H Question 2) The nutrition and food science division of Farnsworth Pharmaceuticals is alpha testing an OTC diagnostic kit so that adults who self-report a certain food allergy can affirm their…Question 2 Ignore the term "maximum likelihood"