A group of 10 students pick ice creams flavors – they are offered the choice between chocolate and vanilla. Vanilla is typically the more popular flavor, and 7 students are expected to pick vanilla, with the remaining 3 are expected to pick chocolate. However, on this day, half (5) choose vanilla and the other half (also 5) choose chocolate. Perform a Chi-Square goodness-of-fit test at a level of .05 significance solve step by step by hand clearly

Q: or the population of 31 companies surveyed, with an average size of 1,414 workers? What type of…

A: Given  Average size = 1414 Companies = 31 The total population will be = 31*1414 =43834

Q: Compute the value of the test statistic. (to 2 decimals)  What is the p-value?

A: The test statistic is, t=x¯1-x¯2s12n1+s22n2=6.82-6.250.64216+0.75210=0.570.28609439=1.9923≈1.99…

Q: Candidate T wants to determine if there is a difference in his popularity between men and women.  To…

A:

Q: One study claimed that 88% of college students identify themselves as procrastinators. A professor…

A: Given,n=282x=235Population proportion(P)=0.88sample proportion(p^)=xnsample…

Q: Which of these best describes the conclusion we could make using a 5% level of significance? Select…

A: The decision in the hypothesis testing can be made using two important methods. They are the p-value…

Q: A marketing expert for a pasta-making com- pany believes that 40% of pasta lovers prefer lasagna. If…

A: Given: n= 20 ,x= 9.0 p= 0.4 ,significance level(∝)= 0.05 p̂= 9.0 / 20

Q: Physicians conducted an experiment to investigate the effectiveness of external hip protectors in…

A: The provided information is    Hip protector Control Hip fracture 13 67 No hip fracture 640…

Q: One study claimed that 86 % of college students identify themselves as procrastinators. A professor…

A: Suppose p is the true population proportion of college students, who are procrastinators.

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 43 of the…

A: Solution To find the confidence interval we will use the z distribution i.e. z critical value.

Q: Answer the given problem. Use the steps in hypothesis testing when presenting the results. A health…

A: Given that, A health researcher is interested in comparing 3 methods of weight loss: low calorie…

Q: You conduct a one-factor ANOVA with 3 groups and 6 subjects in each group (a balanced design) and…

A: Solution

Q: A study was performed to determine the percentage of people who wear life vests while out on the…

A: From the provided information,

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A:

Q: A study is testing the effectiveness of a new allergy medication. Sixty people who reported they…

A: Given: Number of people who have reported allergies = 60

Q: Three composition instructors recorded the number of spelling errors which their students made on a…

A:

Q: 30 Receive Medication Randomly Assigned Compare Level of All Symptoms after Sev Weeks 60 Subjects 30…

A: Given design:

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: It is given that Favourable cases, x1 = 386Sample size, n1 = 590Favourable cases, x2 = 363Sample…

Q: A marketing survey involves product recognition in New York and California. Of 37 New Yorkers…

A: In a survey in New York and California, 37 out of 197 knew the product in New York 99 out of 305…

Q: A psychology student is interested in determining how different instructions affect the time to…

A: Given: Number of error made in different instructions: Verbal (X1) Written (X2) Video (X3) 2 6…

Q: Select the most appropriate response. Five years ago, a survey found that the proportion of city…

A: Solution:  The null and alternative hypotheses are:

Q: P-value = 0.072, a = 0.05 O reject Ho O do not reject Ho P-value = 0.005, a = 0.001 O reject Ho O do…

A: We need to determine the decision based on the given p-values and significance level.

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of​ echinacea, 41 of the…

A: From the given information we conduct the z test.

Q: Researchers were interested in which form of teaching was more effective: online or face-to-face. A…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub-parts, according to…

Q: A popular charity used 36% of its donations on expenses. An organizer for a rival charity wanted to…

A: Given data : 19 25 31 20 41 32 26 21 9 24

Q: Perform a statistical analysis/test of hypothesis, showing all the steps in hypothesis testing.  A…

A: The following information has been given: n=60                s=1.052x¯=7.25

Q: Using a 1% level of significance instead of a 5% level of significance would: Group of answer…

A: The level of significance of 1% is used instead of 5%.

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 35 of the…

A:

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 42 of the…

A:

Q: A middle school wanted to examine if students' sense of school belongingness increased after…

A: It is wanted to be examined by the middle school whether the sense of school belongingness of…

Q: An immunologist is testing the hypothesis that the current flu vaccine is less than 71% effective…

A: Given: Null Hypothesis(H0): p = 0.71 Alternate Hypothesis(Ha) : p < 0.71 α = 0.02

Q: Recently, a health organization estimated that the flu vaccine was 75​% effective against the…

A: a health organization estimated that the flu vaccine was 75​% effective against the influenza B…

Q: If an organization wants to test whether the majority of their employees would be interested in…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A mother bought 4 pieces, namely, apples, mangoes, oranges, and strobey with a proportion of 25%,…

A: Conditional Probability: Let A and B be two events with P(A) > 0. Then the conditional…

Q: Floretta, a golfer, claims that her drive distance is not equal to 238 meters, a believe her, so she…

A:

Q: Past surveys showed that 44.2% of Filipino households have pets. A recent survey reported that 516…

A: Given: x = 512 n =1200 p= 44.2% = 0.442

Q: believes that th 272 college student- of One study claimed that 88 % of college students identify…

A: The question is about hypo. testing Given : Popl. prop. of students who identify themselves as…

Q: One study claimed that 86% of college students identify themselves as procrastinators. A professor…

A: Given: Sample Size,n= 238 Number of successes,x= 193

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of​ echinacea, 42 of the…

A: Answer X1 =42X2 =89n1=47n2 =102level of significance =0.01

Q: Tweet tweet: An article reported that 73% of companies have Twitter accounts. An economist thinks…

A: Hypothesized population proportion, Sample size, Number of companies having twitter accounts, Level…

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

Q: Babies and younger boys are more likely to be diagnosed with peanut allergies. To test this claim a…

A:

Q: A national study report indicated that 20.5% of Americans were identified as having medical bill…

A: