Determine the value of the test statistic. Round your answer to three decimal places.
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Colonial Funds claims to have a bond fund that has maintained a mean share price of $9.00. They claim that the standard deviation of the share price is 0.2. To test this claim, the investor randomly selects 22 days during the last year. He finds an average share price of $8.80 with a standard deviation of 0.1734. Can the investor conclude that the share price of the bond fund varies from Colonial Funds claims at α=0.05?
Determine the value of the test statistic. Round your answer to three decimal places.
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- A population has a standard deviation ? of 18.1 units. (Give your answers correct to two decimal places.) (a) What is the standard error of the mean if samples of size 7 are selected?(b) What is the standard error of the mean if samples of size 24 are selected?(c) What is the standard error of the mean if samples of size 55 are selected?A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of 20 to 80. In a recent year, the national mean score for the writing section was 51.4, with a standard deviation of 11.0. Based on this information, complete the following statements about the distribution of the scores on the writing section for the recent year. C (a) According to Chebyshev's theorem, at least 84% of the scores lie between and. (Round your answer to 1 decimal place.) X 6 ? of the (b) According to Chebyshev's theorem, at least (Choose one) ▼ scores lie between 29.4 and 73.4. Continue e2022 McGraw ▸ tab esc ! 1 ← q a @ 2 W S # 3 a e C d $ 4 r % 5 f acer Dll A t 10 6 g y að & 7 h u 8 j iA credit card company claims that the mean credit card debt for individuals is greater than $5,300. You want to test this claim. You find that a random sample of 30 cardholders has a mean credit card balance of $5,400 and a standard deviation of $625. At a = 0.05, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states H, and H, ? O A. Ho: H2 $5,300 О В. Н: и> $5,300 О с. Но: и- $5,300 Ha: µ $5,300 O D. Ho: µ> $5,300 ОЕ. Но: и3 $5,300 OF. Ho: Hs $5,300 Ha: us $5,300 Ha: H# $5,300 Ha: u> $5,300 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? to =0 (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal…
- #2) A large warehouse installed a security system a few years ago. Under an older system the managers estimated that they were losing an average of $678 worth of goods to thieves each week. A random sample of 36 weekly records under the current system showed that they were still losing an average of $650 worth of goods each week. The sample standard deviation was s = $93. Does this indicate that the average loss is different (either more or less) than the previous $678 per week? Use a 5% level of significance.A credit card company claims that the mean credit card debt for individuals is greater than $5,100. You want to test this claim. You find that a random sample of 36 cardholders has a mean credit card balance of $5,271 and a standard deviation of $650. At a = 0.05, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify H, and Ha. Which of the following correctly states H, and H,? Ho: µs $5,100 Ha: µ> $5,100 B. Ho: µ> $5,100 Ha: us $5,100 C. Ho: µ= $5,100 Ha: u# $5,100 Ho:µ= $5,100 Hai µ > $5,100 O E. Ho: µ2 $5,100 Ha: u $5,100 Hạ: us $5,100 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? to = = 1.690 (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal…Colonial Funds claims to have a bond fund which has maintained a mean share price of $14.00. They claim that the variance of the share price is 0.18. To test this claim, the investor randomly selects 12 days during the last year. He finds an average share price of $13.80 with a standard deviation of 0.3905. Can the investor conclude that the share price of the bond fund varies from Colonial Funds claims at a = 0.05? Step 1 of 5: State the hypotheses in terms of the standard deviation, Round the standard deviation to four decimal places when necessary. Answer Ho: Ha Tables Keypad Keyboard Shortcuts
- I'm having difficulty labeling for the 3 boxes above the graphColonial Funds claims to have a bond fund that has maintained a mean share price of $10.00. They claim that the variance of the share price is 0.18. To test this claim, the investor randomly selects 29 days during the last year. He finds an average share price of $9.80 with a standard deviation of 0.4006. Can the investor conclude that the share price of the bond fund varies from Colonial Funds claims at α=0.05? Step 1 of 5 : State of the hypotheses in terms of the standard deviation. Round the standard deviation to four decimal places when necessary Step 2 of 5 : Determine the critical value(s) of the test statistic. If the test is two-tailed, separate the values with a comma. Round your answer to three decimal places. Step 3 of 5 : Determine the value of the test statistic. Round your answer to three decimal places. Step 4 of 5 : Make the decision. Step 5 of 5 : What is the conclusion?Directions: Compute the total returns, the average of returns, and the standard deviation of the following stocks: 1) 2) EGRH Inc. DMP, Ltd. STOCK RETURN YEA AVERAGE OF RETURNS (x) YEAR STOCK RETURN PRICE AVERAGE OF RETURNS (x) PRICE (x₁) Jan-2021 P8.30 Feb-2021 P8.60 Jan-2021 PO. Feb-2021 PO.090 Mar-2021 P0.097 Apr-2021 PO.189 May-2021 PO.164 Mar-2021 P9.14 Apr-2021 P13.30 May-2021 P13.74 Jun-2021 P14.80 Jul-2021 P16.94 Jun-2021 P0.495 Jul-2021 PO.28 Aug-2021 PO Sep-2021 90 Aug-2021 P13.70 Sep-2021 P14.88 Oct-2021 0.375 Oct-2021 P15.30 Nov-20 PO.325 Nov-2021 P14.30 Dec-2 PO.330 Dec-2021 P15.52 3) SD (8) GSM Inc. STOCK YEAR PRICE Jan-2021 P57.70 Feb-2021 P52.90 Mar-2021 P50.95 Apr-2021 P58.25 May-2021 P74.05 Jun-2021 P94.75 Jul-2021 P85.00 Aug-2021 P105.00 Sep-2021 P114.00 Oct-2021 | P101.00 Nov-2021 P100.40 Dec-2021 P113.80 SD (8) = RETURN (x₁) -x)² AVERAGE OF RETURNS (x-x)² (x) SD (8) = ACEE, Inc. YEAR STOCK RETURN PRICE (x₁) Jan-2021 P13.56 Feb-2021 P20.80 Mar-2021 P22.50 Apr-2021…
- The reading speed of second grade students in a large city is approximately normal, with a mean of 91words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through (f).A credit card company claims that the mean credit card debt for individuals is greater than $5,100. You want to test this claim. You find that a random sample of 28 cardholders has a mean credit card balance of $5,323 and a standard deviation of $550. At a = 0.01, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states H, and H,? A. Ho: µ> $5,100 Hai Hs $5,100 B. Ho: µ= $5,100 Hai µ# $5,100 Ho: µ= $5,100 Ha: µ> $5,100 O D. Ho: µ2 $5,100 Hai H $5,100 O F. Ho: µ> $5,100 Hạ: us $5,100 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? t6 =0 (Use a comma to separate answers as needed. Round to three decimal places as needed.)Assume that the results are normally distributed.An experiment consists of tossing 100 dimes repeatedly and noting the number of heads each time. The graph of the number of heads turns out to be very nearly a normal curve, with a mean of 50 and a standard deviation of 5. (Enter your answers as whole numbers.) (a) Within what limits would you expect the number of heads to be 68% of the time? lower limit heads upper limit heads (b) What percent of the time would you expect the number of heads to be between 40 and 60? %(c) Suppose that a particular dime arouses your suspicion by turning up heads too often. You toss this dime 100 times. How many times will it have to turn up heads in order for you to be almost 100% certain that it is not a fair coin? (Hint: Most of the data in a normal distribution fall within 3 standard deviations of the mean.)more than times