The following are prices of a sanitizer sold at a few selected stores in a District A during the COVID-19 pandemic. Based on the sample data, at 0.05 level of significance, can we conclude the average price of the sanitizer in District A is RM10.50? Make your conclusion using the p-value approach, with the aid of Mic. Office EXCEL.
Q: d) Fill in the missing entries in the ANOVA table. e) What proportion of the total variability of…
A: Anova is the measure that used to estimate the mean significant between the three or more variable.…
Q: Suppose testing has been done for a chemical in the local water with readings of 3.1, 5.2, 1.2, 5.1,…
A: x x2 3.1 9.61 5.2 27.04 1.2 1.44 5.1 26.01 4.9 24.01 2.3 5.29 6.1 37.21 1.4 1.96…
Q: he DASS-21 questionnaire is a validated measure of depression, anxiety, and stress. For the general…
A: Given that the mean for the anxiety for the population is 4.2 As it scales from the questions 0 to…
Q: In a study of 49 countries, the sample correlation between an index of political turmoil an the…
A: Answer Given The sample size [n] = 49r = 0.47
Q: The American Community Survey is administered by the US Census Bureau annually. Two different random…
A: The variable under the study is: Income (in thousands) for two samples A and B. The boxplot is as…
Q: In Ontario, chemical accidents account for 1 in 5 workplace accidents. In Que- bec, out of a sample…
A: Introduction: Denote p as the true proportion of workplace chemical accidents in Place Q.
Q: The US Department of Energy reported that 52% of homes were heated by natural gas. A random sample…
A: Given Information: 52% of homes were heated by natural gas. Sample size n=334 Out of which x=130…
Q: How many six-digit positive integers contain exactly one one, two twos and three treor? How many…
A: First note that here six digit integer can start only with 1 or 2. If it starts with 1 the remaining…
Q: Consider the results in Table 5. After running the regression, we test whether the coefficients of…
A:
Q: omen are recommended to consume 1810 calories per day. You suspect that the average calorie intake…
A: 1899 1642 1719 1669 1685 1528 1650 1725 1825 1754 1497…
Q: Consider the following data on sleep deprivation rates of Californians and Oregonians. The…
A: Denote pCA is true proportion of residents, who reported insufficient rest or sleep during each of…
Q: An article reports that men over 6 feet tall earn more than men under 6 feet, with these numbers:…
A: Statistical significance: It determines the relationship between two or more variables caused by…
Q: Answer the given problem. Use the steps in hypothesis testing when presenting the results. A health…
A: Given that, A health researcher is interested in comparing 3 methods of weight loss: low calorie…
Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…
A:
Q: The third quartile of 4, 6, 8, 9, 9, 11 is: Select one: O a. 8 O b. 5.5 Oc. 9.5 O d. 8.5
A: The third quartile (or upper quartile or 75th percentile) is the median of the upper half of the…
Q: a) Find t. (Give your answer correct to two decimal places.)
A: n = 44, Σd = 224, Σd2 = 6268 The mean is given by The standard deviation is given by
Q: c) Compute the P -value. Round the answer to at least four decimal places. P -value =
A: From given data: n=14 Mean :x=∑xin =21.2+27.5+ 6.5+ 22.8+ 20+ 11.5+ 16.2+ 19.7 +36.3+ 32.5+ 11.1+…
Q: Two companies manufacture a rubber material in- tended for use in an automotive application. The…
A: Two companies manufacture a rubber material in tended for use in an automotive application. The part…
Q: Consider Ho: H1= 42= H3= H4 = us a. Complete the ANOVA table. Mean Sum of Critical Value / Source of…
A: We have to complete ANOVA table = ?
Q: A data set includes data from 400 random tornadoes. The display from technology available below…
A: We have to identify claim.
Q: A newspaper published an article about a study in which researchers subjected laboratory gloves to…
A:
Q: Use the following visualization to answer questions 5 - 6. We are going to focus on 3 explanatory…
A: The explanatory variables and their possible values for predicting the response variable, which is…
Q: Determine the characteristics of the comparison distribution. The comparison distribution will be an…
A: The study shows 4 genetically different strains of mice with each of eight.
Q: Data is collected to compare two different types of batteries. We measure the time to failure of 10…
A: Given that, Mean1, X1 bar= 8.65 Mean2, X2bar=11.23 Variances are equal so standard deviations will…
Q: A manufacturer of Samsung phone charges claims that only 4% of his production is defective. In a…
A: 1. Given claim: The percentage of production is defective is 4%. Null Hypothesis: H0:p=0.04…
Q: Which best illustrates the distinction between statistical significance and practical importance?…
A: Statistical Significance: It tells the relation between two or more variables which are caused by…
Q: The margin of error for the middle interval which captures 95% of the means from samples of size ? =…
A: Now consider the textbook expense of all IUPUI students. The mean and variance of textbook expense…
Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 42 of the…
A: We have given that, X1 = 42, N1 = 48 and X2 = 95, N2 = 111 Significance level = 0.05 Then,…
Q: The DASS-21 questionnaire is a validated measure of depression, anxiety, and stress. For the general…
A: Hypothesis Ho: μ=4.2 vs H1: μ>4.2 test statistic=t=(x¯-μ)/s/n and df=n-1 When population…
Q: A normal population has a mean of μ = 25 on a communication effectiveness scale. After receiving a…
A: From the provided information, Sample size (n) = 4 Level of significance (α) = 0.05
Q: h of the bear population in Yellowstone National Park is monitored by periodic measurements taken…
A: The following null and alternative hypotheses need to be tested: Ho: \mu = 160μ=160 Ha: \mu >…
Q: The quality control department of a soup brand is concerned that its soups contain more MSG than the…
A: Note: " Since you have posted many sub-parts. we will solve the first three sub-parts for you. To…
Q: e ascorbic acid concentration of five different brands of orange juice was measured. Six replicate…
A:
Q: sufficient evidence to indicate a difference in the mean achievements between car owners and…
A: Given : n1=100 , n2=100 , X1-bar=2.70 , X2-bar=2.54 , s12=0.36 , s22=0.40 ,α=0.05 Here , assume that…
Q: b) Now suppose that the same sample proportions came from a sample of 30 times as large. That is,…
A:
Q: Two samples with P .25, n, 36 and p, .3,n, = 49. Test if populations p, p, at a 0.05 level of…
A:
Q: writing a null hypothesis for the bivariate relationship shown in the SPSS ou
A: Given:
Q: According to a Yankelovich poll, women spend an average of 19.1 hours shopping during the month of…
A:
Step by step
Solved in 2 steps
- Women are recommended to consume 1720 calories per day. You suspect that the average calorie intake is different for women at your college. The data for the 12 women who participated in the study is shown below: 1837, 1618, 1820, 1846, 1640, 1700, 1655, 1473, 1563, 1840, 1796, 1854 Assuming that the distribution is normal, what can be concluded at the αα = 0.10 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0:H0: ? μ p Select an answer > < ≠ = H1:H1: ? p μ Select an answer ≠ = < > The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ αα Based on this, we should Select an answer reject accept fail to reject the null hypothesis. Thus, the final conclusion is that ... The data suggest that the population mean…Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements yield x=98.34, y=100.45, r=0.940, P-value=0.000, and y=−3.86+1.06x, where x represents the IQ score of the twin born second. Find the best-predicted value of y given that the twin born second has an IQ of 103? Use a significance level of 0.05.Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs of measurements yield x = 101.16, y = 102.3, r= 0.810, P-value = 0.000, and y = 23.09+0.78x, where x represents the IQ score of the wife. Find the best %3D %3D %3D predicted value of y given that the wife has an IQ of 109? Use a significance level of 0.05. Click the icon to view the critical values of the Pearson correlation coefficient r. .... The best predicted value of y is . (Round to two decimal places as needed.) Critical values of the pearson correlation coefficient r NOTE: To test Ho: p = 0 against H,: p#0, reject Ho |if the absolute value of r is greater than the critical value in the table. a = 0.05 a = 0.01 4 0.950 0.990 0.878 0.959 0.811 0.917 0.754 0.875 0.707 0.834 0.666 0.798 10 0.632 0.765 11 0.602 0.735 12 0.576 0.708 13 0.553 0.684 14 0.532 0.661 15 0.514 0.641 16 0.497 0.623 17 0.482 0.606 18 0.468 0.590 19 0.456 0.575 20 0.444 0.561 25 0.396 0.505 30 0.361 0.463 35 0.335 0.430 40…
- Snow avalanches can be a real problem for travelers in the western United States and Canada. A very common type of avalanche is called the slab avalanche. These have been studied extensively by David McClung, a professor of civil engineering at the University of British Columbia. Suppose slab avalanches studied in a region of Canada had an average thickness of u = 67 cm. The ski patrol at Vail, Colorado, is studying slab avalanches in its region. A random sample of avalanches in spring gave the following thicknesses (in cm). 59 51 76 38 65 54 49 62 68 55 64 67 63 74 65 79 (i) Use a calculator with sample mean and standard deviation keys to find x and s. (Round your answers to two decimal places.) X= cm S= cm (ii) Assume the slab thickness has an approximately normal distribution. Use a 1% level of significance to test the claim that the mean slab thickness in the Vail region is different from that in the region of Canada. (a) What is the level of significance? State the null and…SHOW YOUR SOLUTION COMPLETELY. MAKE SURE YOUR FINALS ANSWERS SHOULD BE IN 4 DECIMAL PLACES.A small pilot study is conducted to investigate the effect of a nutritional supplement on total body weight. Six participants agree to take the nutritional supplement. To assess its effect on body weight, weights are measured before starting the supplementation and then after 6 weeks. The data are shown below. Is there a significant increase in body weight following supplementation? Run the test at a 5% level of significance. Demonstrate the five steps for hypothesis testing and explain your results. Subject Initial Weight Weight after 6 Weeks 1 155 157 2 142 145 3 176 180 4 180 175 5 210 209 6 125 126
- Samples were collected from two ponds in the Bahamas to compare salinity values (in parts per thousand). Several samples were drawn at each site. Pond 1: 37.03, 37.45, 36.75, 37.54, 37.71, 37.02, 37.32 Pond 2: 38.89, 39.05, 38.51, 38.53, 38.71 Use a 2% significance level to test the claim that the two ponds have the same mean salinity value. Assume that nothing is known about the population distribution of salinities. (a) Enter the rank values in the same order as in the original sample. The rank values for Pond 1 are: The rank values for Pond 2 are: (b) The test statistic is: . (c) The test critical value is: . (d) The conclusion isA. There is not sufficient evidence to indicate that the two ponds have different distributions of salinity values.B. There is sufficient evidence to indicate that the two ponds have different distributions of salinity values.In a random sample of males, it was found that 29 write with their left hands and 212 do not. In a random sample of females, it was found that 70 write with their left hands and 444 do not. Use a 0.01 significance level to test the claim that the rate of left-handedness among males is less than that among females. Complete parts (a) through (c) below.a study of store checkout scanners, 1234 items were checked and 23 checked items were overcharges. Use a 0.05 significance level to test the claim that with scanners, 1% of sales are overchanrges. (Before scanners were used, the overcharge rate was estimated to be about 1%). a. Define the parameter A. mu = The proportion of all sales that are undercharges B. p = The proportion of all sales that are incorrect C. p = The proportion of all sales that are overcharges D. mu = The mean number of sales that are overcharges b. State the null and alternative hypotheses A. Upper H 0 : mu not equals 0.01 Upper H 1 : mu equals 0.01 B. Upper H 0 : p greater than 0.01 Upper H 1 : p equals 0.01 C. Upper H 0 : p equals 0.01 Upper H 1 : p not equals 0.01 D. Upper H 0 : p equals 23 Upper H 1 : p less than 23 c. Calculate the sample proportion ModifyingAbove p…
- A program administrator at a high school wanted to see if there was a significant association between experiencing verbal abuse and anxiety in teenage women. She wasn't sure what to expect. Perform the correct statistical procedure to assess the degree of association between these variables and interpret your findings. Set alpha = .05 for your statistical test. YOU CAN EITHER TYPE YOUR WORK OUT HERE OR TAKE A PICTURE OF HANDWRITTEN WORK AND EMAIL IT TO ME. %3D Anxiety Verbal Abuse 5. 4. 4.Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.10 significance level to test for a difference between the measurements from the two arms. What can be concluded? Right arm Left arm 143 179 OA. Ho: H0 H₁: Hd=0 OC. Ho: P = 0 H₁: Hd 0 sufficient evidence to support the claim of a difference in measurements between the two arms.In a study performed on comfort food eating during times of stress, it was found that mean rated comfort food consumption level (on a scale from 1-20) for a group of students undertaking their exam period was 14. In comparison, a group of students who were not undertaking exams or examination preparation had a mean rated comfort food consumption level of 10. The pooled estimate of the population variance was 64. What is the estimated effect size (d) of the study? 0.80 0.06 0.50 2.00