In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 15 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x=8.02 cm3 and s=0.7 cm3. Conduct the appropriate test at the α=0.01 level of significance. Identify the t-statistic. t0=_____? (Round to two decimal places as needed.) Identify the P-value. P-value=____? (Round to three decimal places as needed.) State the null and alternative hypotheses.

In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 15 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x=8.02 cm3 and s=0.7 cm3. Conduct the appropriate test at the α=0.01 level of significance. Identify the t-statistic. t0=_? (Round to two decimal places as needed.) Identify the P-value. P-value=? (Round to three decimal places as needed.) State the null and alternative hypotheses.

Name: In a study, researchers wanted to measure the effect of alcohol on th
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 15 adolescents with alcohol use disord

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 31PPS

See similar textbooks

Similar questions

In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 11 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x=8.06 cm3 and s=0.7 cm3. Conduct the appropriate test at the α=0.01 level of significance. State the null and alternative hypotheses. H0: μ ▼ less than< greater than> equals= not equals≠ nothing H1: μ ▼ less than< not equals≠ equals= greater than> nothing (Type integers or decimals. Do not round.) Identify the t-statistic. t0=nothing (Round to two decimal places as needed.) Identify the P-value. P-value=nothing (Round to three decimal places as needed.)…
In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 24 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x=8.04 cm3 and s=0.7 cm3. Conduct the appropriate test at the α=0.01 level of significance. State the null and alternative hypotheses.…
In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 21 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x=8.14 cm3 and s=0.7 cm3. Conduct the appropriate test at the α=0.01 level of significance. find the p value
Researchers are interested in the body fat measurements of elite women volleyball players from different countries test the claim that the mean body fat if elite women volleyball players from country 1 is smaller than the mean body fat if elite women volleyball players from. Country 2 at the 0.10 significance level
a sample of 60 grade 9 student age was obtained to estimate the mean age of all grade 9 students. x = 15.3 years and the population variance is 16
Rosner analyzed data from children who lived near a lead smelter (which is a facility that uses extreme heat to extract the metal lead from lead ore) in El Paso, Texas, and reported that out of 124 children studied, 23 developed colic (which is a pattern of fussiness and crying for no apparent reason). Suppose that in the state of Taxes in general at the time (early 1980s), the rate of colic in children was 16.0%. Follow the steps for testing whether the proportion of children developing clico was significantly different for the 124 children living near the lead smelter than for Taxes children in general (16%). Use alpha level of 0.03 a. Identify the null hypothesis for this statistical test. b. Identify the alternative hypotheses for this statistical test. c. Explain: Why should this be a two-tailed test, the way I have described it? d. calculate the sample proportion p̂, rounded to three decimal places. e. Calculate the appropriate test statistic, show all work. f. Based on…
In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 21 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 8.75 cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x=7.82 cm3 and s=0.7 cm3. Conduct the appropriate test at the α=0.05 level of significance Click the icon to view the table of critical t-values. State the null and alternative hypotheses. H0: U H1: U
How many stomach cancer patients and controls would be required to estimate the difference in proportion of patients with sufficient concentrations of plasma antioxidant vitamins with a margin of error not exceeding 5% using a 95% CI? The data in table 8-2 were reported recently from a similar study investigating the sufficiency of plasma antioxidant vitmians in throat cancer patients.
In a study comparing the systolic blood pressure of individuals sitting and standing, 14 subjects had their blood pressure measured standing, while 8 individuals has their blood pressure measured sitting. The investigator planned to test the hypothesis that the mean blood pressure readings are the same sitting and standing (the subjects remained in each position for 5 minutes). If the investigator tests at the 7% level of significance, assuming equal variances, the rejection region would be:
People often wait till middle age to worry about having a healthy heart. However, recent studies have shown that earlier monitoring of risk factors such as blood pressure can be very beneficial (The Wall Street Journal, January 10, 2012). Having higher than normal blood pressure, a condition known as hypertension, is a major risk factor for heart disease. Suppose a large sample of individuals of various ages and gender was selected and that each individual’s blood pressure was measured to determine if they have hypertension. For the sample data, the following table shows the percentage of individuals with hypertension. Develop a side-by-side bar chart with age on the horizontal axis, the percentage of individuals with hypertension on the vertical axis, and side-by-side bars based on gender. What does the display you developed in part (a), indicate about hypertension and age? Comment on differences in gender. Age Male Female 20 - 34 11.0% 9.0% 35 – 44…
Efforts by airlines to improve on-time arrival rates are showing results. Boston.com reports that in the first 10 months of 2012 on-time arrival rates at U.S. airports were the highest they have been since 2003. During this period 82% of flights landed within 15 minutes of their scheduled time. Are there differences among the major airlines? The data in Sheet 35 show the number of on-time arrivals for samples of flight taken from seven major U.S. airlines in 2012. Using a 0.05 level of significance, what is the p-value and what is your conclusion? Sheet 35 Arrivals American Airlines Continental Airlines Delta Airlines JetBlue Airlines Southwest Airlines United Airlines US Airways On-time 83 54 96 60 69 66 68 Late 16 18 21 22 23 15 12 99 72 117 82 92 81 80 Select one: a) Chi-square statistic = 4.32, p-value = 0.034, reject the null hypothesis, there is a statistically significant differences in the proportion of on-time arrivals b) Chi-square statistic = 7.370,…
To measure the effect of microfinance on women empowerment, a random sample of women was taken and the average difference between their empowerment indices at present and 5 years ago were computed. The type of sample here is a. related b. independent