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It was found that a certain type of battery supercharger takes an average of 15.4minutes to charge the battery of a standard electric vehicle. Recently, the firmware for this type of supercharger was updated but the update has received negative reviews from users. A researcher suspects that the average time it takes for upgraded superchargers to charge a standard EV battery is longer than 15.4minutes. To test his claim, choosefifferandomly upgraded superchargers and measures the time each takes to charge a standard EV battery. Find that superchargers take a sample mean of16.1 minutes to charge a standard EV battery, with a sample standard deviation of 1.8minutes. Assume that the population of the amounts of time that upgraded superchargers take to charge a standard EV battery approximately follows a normal distribution. Complete the parts below to perform a hypothesis test to determine if there is sufficient evidence, at the significance level of0.05, to support the claim that, the average time it takes for upgraded superchargers to charge a standard EV battery is more than 15.4minutes. (a) Formulate the null hypothesish and the alternative hypothesish that you will use in the test. ho: ☐ H 0<0 X X 020 0=0 (b) Carry out a test and find thep-value. This information is used to perform the test.you OSO 0>0 S

It was found that a certain type of battery supercharger takes an average of 15.4minutes to charge the battery of a standard electric vehicle. Recently, the firmware for this type of supercharger was updated but the update has received negative reviews from users. A researcher suspects that the average time it takes for upgraded superchargers to charge a standard EV battery is longer than 15.4minutes. To test his claim, choosefifferandomly upgraded superchargers and measures the time each takes to charge a standard EV battery. Find that superchargers take a sample mean of16.1 minutes to charge a standard EV battery, with a sample standard deviation of 1.8minutes. Assume that the population of the amounts of time that upgraded superchargers take to charge a standard EV battery approximately follows a normal distribution. Complete the parts below to perform a hypothesis test to determine if there is sufficient evidence, at the significance level of0.05, to support the claim that, the average time it takes for upgraded superchargers to charge a standard EV battery is more than 15.4minutes. (a) Formulate the null hypothesish and the alternative hypothesish that you will use in the test. ho: ☐ H 0<0 X X 020 0=0 (b) Carry out a test and find thep-value. This information is used to perform the test.you OSO 0>0 S

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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It was found that a certain type of battery supercharger takes an average of15.4minutes to charge the battery of a standard electric vehicle. Recently, the firmware for this type of supercharger was updated but the update has received negative reviews from users. A researcher suspects that the average time it takes for upgraded superchargers to charge a standard EV battery is longer than 15.4minutes. To test his claim, choosefiftferandomly upgraded superchargers and measures the time each takes to charge a standard EV battery. Find that superchargers take a sample mean of 16.1 minutes to charge a standard EV battery, with a sample standard deviation of 1.8minutes. Assume that the population of the amounts of time that upgraded superchargers take to charge a standard EV battery approximately follows a normal distribution. Complete the parts below to perform a hypothesis test to determine if there is sufficient evidence, at the significance level of0.05, to support the claim thatμ,the average time it takes for upgraded superchargers to charge a standard EV battery is more than 15.4minutes. (a) Formulate the null hypothesish and the alternative hypothesish that you will use in the test. ho: D h₁: 0 μ O<O OSO ロミロ X (b) Carry out a testjand find thep-value. This information is used to perform the test.y.ou XI 0=0 ☐#0 x-μ • The value of the test statistic is given byvat O<O S
Transcribed Image Text:It was found that a certain type of battery supercharger takes an average of15.4minutes to charge the battery of a standard electric vehicle. Recently, the firmware for this type of supercharger was updated but the update has received negative reviews from users. A researcher suspects that the average time it takes for upgraded superchargers to charge a standard EV battery is longer than 15.4minutes. To test his claim, choosefiftferandomly upgraded superchargers and measures the time each takes to charge a standard EV battery. Find that superchargers take a sample mean of 16.1 minutes to charge a standard EV battery, with a sample standard deviation of 1.8minutes. Assume that the population of the amounts of time that upgraded superchargers take to charge a standard EV battery approximately follows a normal distribution. Complete the parts below to perform a hypothesis test to determine if there is sufficient evidence, at the significance level of0.05, to support the claim thatμ,the average time it takes for upgraded superchargers to charge a standard EV battery is more than 15.4minutes. (a) Formulate the null hypothesish and the alternative hypothesish that you will use in the test. ho: D h₁: 0 μ O<O OSO ロミロ X (b) Carry out a testjand find thep-value. This information is used to perform the test.y.ou XI 0=0 ☐#0 x-μ • The value of the test statistic is given byvat O<O S
• The value of the test statistic is given byyou Student's t distribution no • The p- value is the area under the curve to the right of the value of the test statistic. Step 1: Enter the number of degrees of freedom. Step 2: Select one queue or two queues. A tail two tails Step 3: Enter the test statistic. (Round to 3 decimal places. χ-μ Step 4: Shade the area represented by the p value. Step 5: Enter the p- value. (Round to 3 decimal places. yes 0.4+ 0.3 0.2- 0.1+
Transcribed Image Text:• The value of the test statistic is given byyou Student's t distribution no • The p- value is the area under the curve to the right of the value of the test statistic. Step 1: Enter the number of degrees of freedom. Step 2: Select one queue or two queues. A tail two tails Step 3: Enter the test statistic. (Round to 3 decimal places. χ-μ Step 4: Shade the area represented by the p value. Step 5: Enter the p- value. (Round to 3 decimal places. yes 0.4+ 0.3 0.2- 0.1+
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