A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus due to acid reflux. The manufacturer of the drug claims that more than 94% of patients taking the drug are healed within 8 weeks. In clinical trials, 213 of 224 patients suffering from acid reflux disease were healed after 8 weeks. Test the manufacturer's claim at the α = 0.1 level of significance. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Because npo (1-Po)=L 10, the sample size is (Round to one decimal place as needed.) 5% of the population size, and the sample satisfied. the requirements for testing the hypothesis
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- Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma.+ Over a period of months, an adult male patient has taken eleven blood tests for uric acid. The mean concentration was x = 5.29 mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, with o = 1.87 mg/dl. (a) Find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. What is the margin of error? (Round your answers to two decimal places.) lower limit upper limit margin of error (b) What conditions are necessary for your calculations? (Select all that apply.) o is known o is unknown normal distribution of uric acid O uniform distribution of uric acid On is large (c) Interpret your results in the context of this problem. O We are 5% confident that the true uric acid level for this patient falls within this interval. O We are 95% confident that the…Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma. Over a period of months, anadult male patient has taken eight blood tests for uric acid. The mean concentration was ?̅= 5.35mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, withσ = 1.85 mg/dl.a. Find a 90% confidence interval for the population mean concentration of uric acid in thispatient’s blood. What is the margin of error?b. Find a 99% confidence interval for the population mean concentration of uric acid in thispatient’s blood. What is the margin of error?c. Compare the margins of error for parts (a) and (b). As confidence levels increase, do marginsof error increase?Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma.+ Over a period of months, an adult male patient has taken eleven blood tests for uric acid. The mean concentration was x = 5.31 mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, with o = 1.93 mg/dl. (a) Find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. What is the margin of error? (Round your answers to two decimal places.) lower limit upper limit margin of error (b) What conditions are necessary for your calculations? (Select all that apply.) a is unknown On is large O uniform distribution of uric acid normal distribution of uric acid a is known (c) Interpret your results in the context of this problem. O We are 5% confident that the true uric acid level for this patient falls within this interval. O The probability that this…
- The FDA regulates that a fish that is consumed is allowed to contain at most 1 mg/kg of mercury. In Florida, bass fish were collected in a random sample of different lakes to measure the average amount of mercury in the sample of fish from each lake. The data for the average amount of mercury in each lake is in table below. Do the data provide enough evidence to show that the fish in all Florida lakes have a lower mercury level than the allowable amount? Test at the 3% level. mercury level of fish in mg/kg 0.27 0.18 0.86 0.25 0.34 0.73 0.49 0.49 0.43 0.56 0.56 0.41 0.34 0.71 0.48 1.23 0.19 0.77 1.1 0.87 0.81 0.65 0.28 0.5 0.27 0.84 0.63 0.15 0.4 0.1 0.27 0.04 1.08 0.59 1.33 0.04 1.16 0.17 P: Parameter What is the correct parameter symbol for this problem? What is the wording of the parameter in the context of this problem? H: Hypotheses Fill in the correct null…Overproduction of uric acid in the body can be an Indication of cell breakdown. This may be an advance indication of liness such as gout, leukemia, or lymphoma. Over a period of months, an adult male patient has taken five blood tests for uric acid. The mean concentration was x- 5.35 mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, with a-1.81 mg/dl. (a) Find a 95 % confidence interval for the population mean concentration of uric acid in this patient's blood. What is the margin of error? (b) What conditions are necessary for your calculations? (c) Interpret your results in the context of this problem. (d) Sample size Find the sample size necessary for 95% confidence level with a maximal margin of error E = 1.10 for the mean concentration of uric acid in this patient's blood. Thank youThe FDA regulates that a fish that is consumed is allowed to contain at most 1 mg/kg of mercury. In Florida, bass fish were collected in a random sample of different lakes to measure the average amount of mercury in the sample of fish from each lake. The data for the average amount of mercury in each lake is in table below. Do the data provide enough evidence to show that the fish in all Florida lakes have a lower mercury level than the allowable amount? Test at the 3% level. mercury level of fish in mg/kg 0.27 0.18 0.86 0.25 0.34 0.73 0.49 0.49 0.43 0.56 0.56 0.41 0.34 0.71 0.48 1.23 0.19 0.77 1.1 0.87 0.81 0.65 0.28 0.5 0.27 0.84 0.63 0.15 0.4 0.1 0.27 0.04 1.08 0.59 1.33 0.04 1.16 0.17 P: Parameter What is the correct parameter symbol for this problem? What is the wording of the parameter in the context of this problem? H: Hypotheses Fill in the correct null…
- Unfortunately, arsenic occurs naturally in some ground watert. A mean arsenic level of u = 8.0 parts per billion (ppb) is considered safe for agricultural use. A well in Texas is used to water cotton crops. This well is tested on a regular basis for arsenic. A random sample of 36 tests gave a sample mean of x = 7.0 ppb arsenic, with s = 2.3 ppb. Does this information indicate that the mean level of arsenic in this well is less than 8 ppb? Use a = 0.01. (a) What is the level of significance? State the null and alternate hypotheses. О но: и 3 8 рb; н,: и +8 ppb O Ho: H > 8 ppb; H: µ = 8 ppb O Ho: H = 8 ppb; H: µ > 8 ppb O Ho: H = 8 ppb; H,: µ < 8 ppb O Ho: H < 8 ppb; H,: µ = 8 ppb (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The standard normal, since the sample size is large and o is unknown. O The Student's t, since the sample size is large and o is unknown. O The standard normal, since the sample size is large and o is…Unfortunately, arsenic occurs naturally in some ground watert. A mean arsenic level of u = 8.0 parts per billion (ppb) is considered safe for agricultural use. A well in Texas is used to water cotton crops. This well is tested on a regular basis for arsenic. A random sample of 41 tests gave a sample mean of x = 6.9 ppb arsenic, with s = 2.8 ppb. Does this information indicate that the mean level of arsenic in this well is less than 8 ppb? Use a = 0.05. (a) What is the level of significance? State the null and alternate hypotheses. О Но: и 8 pb О Но: и> 8 рpb; Hi: и %3D 8 рpb (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The Student's t, since the sample size is large and o is unknown. The standard normal, since the sample size is large and o is known. The Student's t, since the sample size is large and o is known. O The standard normal, since the sample size is large and o is unknown. What is the value of the sample test…The EPA recommends avoiding consumption of fish species if the mercury concentration is higher than 0.45 (ug mercury/g uncooked fish). The concentration in a large random sample of marlin was found to be 0.42 ug/g with a margin of error = 0.06 ug/g. Explain whether the EPA should consider marlin a species to avoid for consumption.
- A researcher reports an F-statistic (F-ratio) with df = (3, 18) from an independent-measures ANOVA. Based on the df values, how many treatments were compared in the study and what was the total number of subjects participating in the study?A random sample of 28 records of automobile driver fatalities in kit carson coybry showed 15 involved an intoxicated driver. Do these data indicate that the population proportion of driver fatalities related to alochol is less than 77%. Use a=0.01 to determine the test statistic, the critical value, and p value.Tire pressure (psi) and mileage (mpg) were recorded for a random sample of seven cars of thesame make and model. The extended data table (left) and fit model report (right) are based on aquadratic model What is the predicted average mileage at tire pressure x = 31?