Final exam The final exam will start open up nov 27 12:00 amYou have three attempts to complete the final exam you have unlimited time For the final exam . My final exam is due on Dec 3The password and username is on the attachment
https://learn.hawkeslearning.com/Portal/User/LoginI sent the notes on the attachment and The password and username as well on the attachment
https://learn.hawkeslearning.com/Portal/User/LoginMath 1401 Final Exam Practice Test _Kersey (Answer Key) 1. Bank account numbers are an example of which type of data? A) Statistic B) Qualitative C) Inferential D) Quantitative 2. Heights of sunflowers in a garden are an example of which type of data? A) Parameter B) Quantitative C) Extreme D) Qualitative 3. Consider the following data. 11,−10, 0, 0,−13, 6 Step 1. Determine the mean of the given data. Answer: _______________ Step 2. Determine the median of the given data. Answer: _______________ 1245220 3724215 with 1284calculator 2without calculator 1 STAT EDIT 7 Li Mean lltC l0 t0t0tG 2 STAT CALC Y 6 i var stats 1 1 List frequst leave it blank 2Median calcuttate o 13T to o Hit median _Oto 2 0 mean I 3 mode occurs mostoften Med _o Step 3. Determine if the data set is unimodal, bimodal, multimodal, or has no mode. Identify the mode(s), if any exist. Answer: __________ 4. Consider the following data: 8, 4, 2, 6, 3, 1 Step 1. Calculate the value of the sample variance. Round your answer to one decimal place. Answer: _______________ Step 2. Calculate the value of the sample standard deviation. Round your answer to one decimal place. Answer: _______________ Step 3. Calculate the value of the range. Answer: _______________ 5. Mrs. Connor's physics class has 97 students, classified by academic year and gender, as illustrated in the table. Mrs. Connor randomly chooses one student to collect yesterday's work. Mrs. Connor's Physics Class Academic Year Males Females Freshmen 16 12 Sophomores 12 9 Juniors 14 17 Seniors 10 7 O TI84Calculator STAT EDIT Li 2 STAT CALC l var stats 5 2 2.60768096212 6g List L1 FreqList leave itblank 6.8 Calculate Sx X 2 607680962 2 6 Range max min 8 I 3 7 12 9117 7 45 Step 1. What is the probability that she selects a female, given that she chooses randomly from only the sophomores? Express your answer as a fraction or a decimal rounded to four decimal places. Answer: _______________ Step 2. What is the probability that she selects a sophomore, given that she chooses a female? Express your answer as a fraction or a decimal rounded to four decimal places. Answer: _______________ 6. Consider the following data: ?? 3 4 5 6 7 ??(?? = ??) 0.1 0.3 0.3 0.1 0.2 Step 1. Find the expected value ??( ?? ). Round your answer to one decimal place. Answer: _______________ Step 2. Find the variance. Round your answer to one decimal place. Answer: _______________ Step 3. Find the standard deviation. Round your answer to one decimal place. Answer: _______________ Step 4. Find the value of ??(?? > 4). Round your answer to one decimal place. Answer: _______________ Step 5. Find the value of ??(?? ≤ 6). Round your answer to one decimal place. NFemale in sophomore 3 p F sophomores nlsophomores7 g 9 57 p sophomorefemale nlsophomoreinfemak.IT g gnCfemalej 1184Calculator Li STAT Edit Lzp L2 ISTAT calc i var stats List L1 I 5 Freqcist L2 calculate 5 0 2 4.2649110645 16 1 6 0 1.264911064X 1 3 X 3 4 56 7 774 0.6 pex 41 74 51 174 6 1174 7 0.3 0.1 0.2 0.6 X 3 4 56 7 Nef P XE61 71143 117447119 5 117116 Answer: _______________ 7. A real estate agent has 15 properties that she shows. She feels that there is a 50% chance of selling any one property during a week. The chance of selling any one property is independent of selling another property. Compute the probability of selling less than 4 properties in one week. Round your answer to four decimal places. Answer: _______________ 8. At the Fidelity Credit Union, a mean of 3.5 customers arrive hourly at the drive-through window. What is the probability that, in any hour, more than 5 customers will arrive? Round your answer to four decimal places. Answer: _______________ 9. Find the area under the standard normal curve to the right of ?? = 0.74. Round your answer to four decimal places, if necessary. Answer: ____________________ 10. The weights of steers in a herd are distributed normally. The standard deviation is 200 lbs and the mean steer weight is 1300 lbs. Find the probability that the weight of a randomly selected steer is between 1119 and 1639 lbs. Round your answer to four decimal places. Answer: ____________________ 11. The diameters of ball bearings are distributed normally. The mean diameter is 83 millimeters and the standard deviation is 3 millimeters. Find the probability that the X 3 4 56 0.8 Kb v v v pXe6 141 3 18441 7 5 17416 0.110.310.3 10.1 0.8 Binomial Distribution n 15 4 0.5 calf 1 Cdf2nd VARS w p K4 nomdto.am 3iooYfffEiIj5.3i u u u Poisson Distribution 3.5 cdf 1Cdt PIX I µt0.1424 L Poissonadff35,5 40.1423864467 v v 4 0.74UL 1099 MIO 0 1 71220.74 0.2296 normalcdfco74co99,0 I NH 0.2296499234 0.14 Normal distribution LL1119 UK1639 MII300 0 200 711119421639 normalcdf 1119,1639 Booooo 0.7722 XD 0.7722296577 464 diameter of a selected bearing is greater than 85 millimeters. Round your answer to four decimal places. Answer: ____________________ 12. A research company desires to know the mean consumption of meat per week among males over age 23. A sample of 246 males over age 23 was drawn and the mean meat consumption was 4.3 pounds. Assume that the population standard deviation is known to be 0.8 pounds. Construct the 95% confidence interval for the mean consumption of meat among males over age 23. Round your answers to one decimal place. Answer: Lower endpoint: _______________ Upper endpoint: _______________ 13. In a random sample of 18 residents of the state of Montana, the mean waste recycled per person per day was 2.1 pounds with a standard deviation of 0.74 pounds. Determine the 80% confidence interval for the mean waste recycled per person per day for the population of Montana. Assume the population is approximately normal. Step 1. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Answer: _______________ Step 2. Construct the 80% confidence interval. Round your answer to one decimal place. Answer: Lower endpoint: _______________ Upper endpoint: _______________ 14. A researcher compares the effectiveness of two different instructional methods for teaching physiology. A sample of 297 students using Method 1 produces a testing average of 50.2. A sample of 298 students using Method 2 produces a testing average of 70.8. Assume that the population standard deviation for Method 1 is 11.05, while the population standard deviation for Method 2 is 7.27. Determine the 98% a l Plucker µ83 0 3 PIX 85 0.2525 normal 85,1099,833 go.gl m 0.252492467 LL 85 ULelongg STAT µ a 246 1 43 s II 4.2.4444 2Interval Tisknown 2Interval STAT Iv TESTS n48 I _2 l Sx 0.74 0 8070 0.8 t S isgiven but Tounknown 1Interval1Interval X CL 1.8614 2.3326 1 9 2.3 confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2. Step 1. Find the point estimate for the true difference between the population means. Answer: _______________points Step 2. Calculate the margin of error of a confidence interval for the difference between the two population means. Round your answer to six decimal places. Answer: _______________points Step 3. Construct the 98% confidence interval. Round your answers to one decimal place. Answer: Lower endpoint: _______________ Upper endpoint: _______________ Method 1 hi 297 I 50.2 9 11.05 98 2 Sample Method 2 Nz298 12 70.8 Ta 7.27 2Interval 20.6 pointestimate fu Is Th Iz STAT 50.2 70.8 I 20.6 TESTS f tr 2sample 2Interval I 780000 T known 2 sampleZInteroat E U T CI 622.38 18.82 22.4 18.8 1 calf lessthan 4 morethan 4 calf morethan PILL Xc UL e µy normalcdf ILL UL M T gg HEd 1. Correct