You ask 15 random people if their favorite football team is the Philadelphia Eagles. From past data, it’s known that 70% of people consider the Philadelphia Eagles to be their favorite football team. (a) What is the mean number of people that consider the Philadelphia Eagles to be their favorite football team. [mean] (b) What is the standard deviation of people that consider the Philadelphia Eagles to be their favorite football team. [stddev] Round your answers to 1 decimal place.
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Proto-oncogenes are normal genes with the potential to becom…
Proto-oncogenes are normal genes with the potential to become oncogenes. Which of the following statements regarding oncogenes is false?
From previous studies, it is concluded that 75% of workers g…
From previous studies, it is concluded that 75% of workers got their job through newspaper ads. A researcher claims this percentage has increased and decides to survey 100 adults. After surveying the 100 adults, the researcher finds that 79 workers got their jobs through newspaper ads. Test the researcher’s claim at the 5% significance level. a) Find the p-value [pvalue]b) State your decision [decision]
The dean at a university states that the average GPA of stud…
The dean at a university states that the average GPA of students is less than 3.2 You decide to survey 120 students and from this sample you calculate the mean GPA is 3.14 and the standard deviation is 0.35 Test the dean’s claim at the 5% significance level. a) Find the p-value [pvalue]b) Is there enough evidence to support the dean’s claim, or is there not enough evidence to support the dean’s claim. [decision]
The following table shows data collected for hours spent onl…
The following table shows data collected for hours spent online and test scores for various students. Hours spent online (x) Test Score (y) 0 96 1 85 2 82 3 74 3 90 5 81 5 83 7 75 10 50 (a) Find the sample correlation coefficient (r) for this dataset [corr] (b) Determine if the correlation is significant, or not significant (use a significance level of 0.05) [sign]
Three different diet plans are to be tested for mean weight…
Three different diet plans are to be tested for mean weight loss. Results are shown below (data represents weight loss in pounds for the participants in the study). The claim is that at least one mean is different from the others among the three plans. Using a level of significance of 0.05, test the claim. (a) Determine the p-value [pvalue] (b) Come to a conclusion [concl] Diet Plan #1 Diet Plan #2 Diet Plan #3 4 10 5.5 7.5 5.5 6.5 3.5 12.5 2 12 16 6 6 1.5 7
You decide to order 22 pizzas from Pizza Hut and record the…
You decide to order 22 pizzas from Pizza Hut and record the delivery times. For the sample of 22 pizzas, the average delivery time turns out to be 29 minutes with a sample standard deviation of 2.5 minutes. What is the margin of error, E (round your answer to 3 decimal places) [moe] What is a 90% confidence interval for the true mean delivery time for Pizza Hut (round your answer to 3 decimal places) [conf]
Scientists have discovered many different kinds of non-patho…
Scientists have discovered many different kinds of non-pathogenic bacteria that live in association with humans. Both organisms are benefited by the presence of the other. This kind of interspecific relationship is known as
The elevation located between the superciliary arches on the…
The elevation located between the superciliary arches on the inferior part of the frontal bone immediately above the rot of the noes is called the
The width of the base of the nose is equal to
The width of the base of the nose is equal to