A nutritionist claims that the proportion of females who consume too much saturated fat is lower than the proportion of males who consume too much saturated fat. In interviews with 513 randomly selected females, she determined that 300 consume too much saturated fat. In interviews with 564 randomly selected males. She determined that 391 consume too much saturated fat. Determine whether a lower proportion of females than males consume too much saturated fat at alpha = 0.05 level of significance. State the conclusion.

Q: A manufacturer of flashlight batteries claims that the average life of her batteries is larger than…

A: a)   H0: µ = 400 Ha: µ > 400 This is right tailed test. Using calculator, X̅ = 473.4615 , S =…

Q: A random sample of 300 male students at PCC shows that 230 of them have internet access at home…

A: Given data : x1= 230.0 n1= 300 x2= 290.0 n2= 350 significance level,…

Q: To test the classic debate about which tastes better, Coke or Pepsi, we sampled 252 children and…

A: Coke choosen by 169 Pepsi choose by 83

Q: A well-known brokerage firm executive claimed that 10% of investors are currently confident of…

A:

Q: Alexa hypothesizes that consuming whole-grain cereal for breakfast will cause students to take part…

A:

Q: A survey of 90 recently delivered women on the rolls of a county welfare department revealed that 27…

A: Given,n=90x=27p^=xnp^=2790=0.3α=0.05

Q: From the given problem below, a. State the null and the alternative hypotheses b. Compute the test…

A: From the provided information, Sample size (n) = 50 Sample mean (x̄) = 122.50 Population standard…

Q: Assume them to be a random sample from a normal population. Perform a hypothesis test at alpha =…

A: Given:  n = 10 variance, σ2 = 0.02 α = 0.05

Q: A researcher did a one-tailed one-sample t-test to test the hypothesis that babies prefer the color…

A: Given Information: A researcher did a one-sample t-test (one tailed) to test the hypothesis that…

Q: The appearance of leaf pigment glands in the seedling stage of cotton plants is genetically…

A:

Q: Why would you use a low alpha? To minimize the probability to make a Type I error To minimize the…

A:

Q: It is believed that a sweetener called xylitol helps prevent ear infections. In a randomized…

A:

Q: A snack food manufacturer estimates that the variance of the number of grams of carbohydrates in…

A:

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

A: The sample size is n=105 The number of favorable cases x=47 The sample proportion is…

Q: A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have…

A: Given information:               Number of Reported Side-Effects Old Drug         0          1…

Q: Three samples of individuals over the age of 21 were selected from three race groups and the number…

A:

Q: In a test of H0: p = 0.8 against H1: p ≠ 0.8, a sample of size 1000 produces Z = 2.05 for the value…

A: Null Hypothesis H0: p = 0.8  Alternate Hypothesis H1: p ≠ 0.8Alternate Hypothesis suggests that the…

Q: Dr. Romanoff reported the following in a journal: “F (5, 106) = 10.09, p = .04.”  Should Dr.…

A: It is given that p- value is 0.04 and the level of significance is 0.05.

Q: A recent study of newborns used umbilical cord blood to test for 25-hydroxyvitamin D, which is an…

A: From the provided information, It was reported that 65% of babies tested were deficient in Vitamin D…

Q: 92 83 80 85 82 78 Degrees of freedom (from calculation or Jamovi): ____________   Critical…

A:

Q: A manufacturer of flashlight batteries claims that the average life of her batteries is larger than…

A: Given data is342,426,317,545,264,451,1049,631,512,266,492,562,298Mean(x)=sum of the data settotal…

Q: In a previous year, 61% of females aged 15 and older lived alone. A sociologist tests whether this…

A: np(1-p)= 400×0.6×0.4=96>10  Hence, the sample size is under 5%op population size and consider as…

Q: In a simple random sample of 24 small business owners, 20 said that hiring college workplace better.…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: a) Is there some evidence to suggest that the placebo works? Explain. b) Use the Four-Step-Procedure…

A: Sample proportion = 14/50 = 0.28 n = 50 Population proportion = 0.25

Q: A randomized study was performed to determine whether a diet of processed meats causes a higher…

A: Suppose, p1 be the population proportion of a diet high in processed meat who got breast cancer. p2…

Q: In a completely randomized experimental design, three brands of paper towels were tested for their…

A: Anova: Single Factor                   SUMMARY         Groups Count Sum Average Variance x 4…

Q: In a completely randomized experimental design, three brands of paper towels were tested for their…

A: The random variable is ability to absorb water. There are 3 independent samples which are 3 brands…

Q: In a simple random sample of 23 small business owners, 22 said that hiring college graduates makes…

A: Given that   Sample size (n) = 2   X = 22  P cap = x/n  = 22/ 23 Proportion (P0 ) = 79% = 0.79 Alpha…

Q: The selection of our alpha level is directly related to the likelihood of making a type I error.…

A: In hypothesis testing the Type I error is said to be committed when true null hypothesis  is…

Q: . A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may…

A: From the provided information, R1 = 31.5 R2 = 31.5 And n1 = n2 = 5 The hypotheses can be constructed…

Q: A randomized study was performed to determine whether a diet of processed meats causes a higher…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: The appearance of leaf pigment glands in the seedling stage of cotton plants is genetically…

A:

Q: from a hörmally distributed population with an unknown ich test statistic to use. ze 16, and it is…

A: a). In this hypothesis case, we need to test the claim that population mean score in anthropology is…

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

A:

Q: I’m interested in seeing whether or not online supplementary material helps students achieve higher…

A: Given Information: Sample space of Group 1(Online + textbook)=(95, 90, 92, 92, 84, 86, 91, 92, 80,…

Q: In a survey of 460   drivers from the​ South, 397   wear a seat belt. In a survey of 340…

A: Given Information: Number of drivers surveyed from south, n1 =460. Number of drivers who wear seat…

Q: the proportion of people who dream in color is different than the proportion in the 1940’s? What is…

A: Given : In a recent study of a random sample of 113 people, 92 reported dreaming in color. In the…

Q: A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have…

A: The hypothesis test is a statistical method in which one using the sample data try to check the…

Q: 31% of all pygmy softshell tortoises have stripes on their shells. A herpetologist in Cititon…

A:

Q: A recent report states that 55% of U.S. adults use Netflix to stream shows and movies. An…

A: The hypothesis will be stated as below

Q: A random sample of 100 freshman showed 6 had satisfed the university mathematics requirement and a…

A: Given data: A random sample = 100 freshman showed =  6 had satisfed the university mathematics…

Q: The following table shows the results of a screening test hypothesized to detect persons at risk for…

A:

Q: The following table shows the results of a screening test hypothesized to detect persons at risk for…

A: Answer 1: We can compare the given table layout to the table layout of possibilities and get the…

Q: 10. In a randomized clinical trial, 888 people were placed given Drug A and 930 were given Drug B.…

A: Note: As per our company guidelines we are supposed to answer the first question only. Kindly ask…

Q: In a survey of 470 drivers from the​ South, 404 wear a seat belt. In a survey of 360 drivers from…

A: Solution-: Let, p1 and p2 be proportion of drivers from the South and drivers from the Northeast…

Q: Prior to an intensive TV advertising campaign, the producers of Nike athletic shoes find that 29 of…

A: Given that Is the increase in the proportion of upper income adults showing brand awareness…

Q: A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have…

A: The data are given, First we arrange the data and give the rank. 1) sort the combined value of both…

Q: In a test of H0: p = 0.4 against H1: p ≠ 0.4, a sample of size 100 produces Z = 1.28 for the value…

A:

Q: A major credit card company is interested in the proportion of individuals who use a competitor’s…

A: The test hypotheses are:  H0: p=0.65 vs Ha: p>0.65. It is given that the p0=0.70, the p-value is…

Q: Research done at the Harvard School of Public Health showed that regular soda drinkers may have a…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.