m| Schoolk x Ltool/1665624882/launch 5.4 Cool-down Diego runs a 10 kilometer race and keeps track of his speed. 13 12 10 6. 8 10 distance (kilometers) 1. What was Diego's speed at the 5 kilometer mark in the race? nvin thahavhela. Tune Schoelogy Blog | PRIVACY POLICY | Terms of
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- Einar Óli measured the area of scallops in two places in Breiðafjörður and used a t-test to find out if there was a difference in the area of scallops in these two places. Type II error occurred when Einar Óli performed his hypothesis test. What happened?Dave is driving on an American Interstate highway which has a speed limit of 55 mph. At 2 pm he is at milepost 110 and at 5 pm he is at milepost 290. Is this enough evidence to prove that Dave was speeding? Prove using the Mean Value Theorem.Calculateaconfidenceinterval for the me-dian ofthe second population.Select your confidenc eleve land reportit with your answer.??
- State the final conclusion that addresses the original claim. ▼(reject/ fail to reject) H0. There is ▼ ( not sufficeint or sufficient ) evidence to conclude that the mean lead concentration for all such medicines is ▼A drug manufacturer claims that a drug of its own production is 90% effective in relieving allergies for 8 hours. In a sample of 200 people with allergies, the drug relieved pain in 160 of them. Is the manufacturer's claim true on the level of morale? 1%.What is the average NO3- concentration at the upslope site (3 decimal places)? What is the average NO3- concentration at the downslope site ( 3 decimal places)? Given the EPA drinking water quality standard is 10 mg/L of nitrate, is the upslope site safe to drink based only on nitrate content? (Enter yes or no) Is the downslope site safe to drink, based only on NO3- concentration? (Enter yes or no) Assuming the two sites are hydrologically well connected, the transit time between the two sites is fast, and the two sites cannot be treated as independent samples, what kind of t-test should be performed to show that the upslope site is greater than the downslope site? Enter the letter of your answer choice in the answer blank A. one-tailed unpaired t-testB. two-tailed unpaired t-testC. one-tailed paired t-testD. two-tailed paired t-test What is the calculated t statistic, rounded to 4 decimal places? Is the calculated t statistic greater or less than the critical t value reported by…
- A taxi company manager is trying to decide whether the use of radial tires instead of regular belted tires improves fuel economy. Twelve cars were equipped with radial tires and driven over a prescribed test course. Without changing drivers, the same cars were then equipped with regular belted tires and driven once again over the test course. The gasoline consumption, in kilometers per liter, was recorded as follows: (image attached) Can we conclude that cars equipped with radial tires give better fuel economy than those equipped with belted tires? Assume the populations to be normally distributed. Use both p-value and critical value approach.3. Washers used in a certain application aresupposed to have a thickness of 2 mm. A qualitycontrol engineer measures the thicknesses for asample of washers and tests H0 ? = 2 versusH1: ? ≠ 2.a. Explain what a Type 1 error would mean, incontext.b. Explain what a Type 2 error would mean, incontext.c. Explain both types of correct decisions in context.State the final conclusion that addresses the original claim. please choose one underline per area. Reject/Fail to Reject H0. There is not sufficent/suffient evidence to conclude that the mean lead concentration for all such medicines is not/equal to/greater than/less than.
- A research center claims that 26% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1000 adults in that country, 29% say that they would travel into space on a commercial flight if they could afford it. At α=0.05, is there enough evidence to reject the research center's claim? Complete parts (a) through (d) below. (a) Identify the claim and state H0 and Ha. "Recall that the claim is the percentage of adults in the country would travel into space on a commercial flight if they could afford it. Let a success be an adult in the country who would travel into space on a commercial flight if they could afford it. Translate the claim made about the population parameter from a verbal statement to a mathematical statement." (b) Use technology to find the P-value. (c) Decide whether to reject or fail to reject the null hypothesis and (d) interpret the decision in the context of the original claim.A survey of 546 U.S. woman found that more than 56% are the primary investor in their households. (Adapted from Roper Strach Worldwide for intuit) d) What is the level of measurement? e) What is the descriptive aspect? f) What conclusion could you draw from the information?Explain what Cohen's d and r2 measure when calculated for a t test