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8 days ago

Aubrey's dinner cost \$85$85dollar sign, 85. She tips the waitstaff 30\%30%30, percent for excellent service.

1 answer:

4 0

Aubrey's dinner totaled $85. For excellent service, she tips the waitstaff 30%. The tip amount is $25.5. To calculate the tip, we start with the total cost of the dinner, which is $85, and apply the 30% tip rate. So, 30% of $85 is calculated as: Tip = 30% of 85. This results in Aubrey tipping the waitstaff $25.5.

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In 2012, third baseman miguel cabrera of the detroit tigers baseball team had 205 hits in 622 times at bat. What is miguel's bat

Svet_ta [9500]

Miguel's batting average is roughly 0.330

Explanation

Miguel Cabrera achieved 205 hits in 622 at-bats.

To calculate batting average, we need to divide the hits by the total at-bats and round the result to three decimal places since batting average is conventionally rounded in this manner.

Hence, Miguel's batting average $=\frac{205}{622}=0.32958....$ ≈ 0.330 (Rounded to three decimal points)

6 0

15 hours ago

A small town's phone numbers either begin 373 or 377. How many phone numbers are available?

babunello [8412]

There are a total of 20,000 available numbers. To ascertain how many phone numbers are available, the number of digits in each number must be known. Here, I will assume each number has 7 digits. This leads to the format starting with either 373XXXX or 377XXXX, where each X can be any digit from 0 to 9. This results in 10 options for each X. Therefore, there are 10×10×10×10 = 10,000 distinct phone numbers starting with 373 and another 10,000 with 377, totaling 20,000 numbers.

6 0

13 days ago

Many gas stations give a discount for using cash instead of a credit card. A gas station gives a discount of 10 cents per gallon

babunello [8412]

Response:

2.33 $

Detailed breakdown:

10x14=140 cents / 2.33$

4 0

19 days ago

A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit

Inessa [9000]

Answer: D) $\$50\pm\$11.08$

Step-by-step explanation:

Based on the provided information, we have

Sample size: n= 15

sample mean: $\overline{x}=\$50.50$

Sample standard deviation: s= $20

Since the population standard deviation is not known, we utilize a t-test.

For a significance level of 95% confidence: $\alpha=1-0.95=0.05$

Critical t-value : $t_{n-1, \alpha/2}=t_{014,0.025}=2.145$ [Using the Student's t-value table]

The required 95% confidence interval yields:-

$\overline{x}\pm t_{n-1, \alpha/2}\dfrac{s}{\sqrt{n}}\\\\ =\$50.50\pm(2.145)\dfrac{\$20}{\sqrt{15}}\\\\\approx \$50\pm\$11.08$

Thus, the sought-after 95% confidence interval for the mean amount spent by credit card customers during their initial visit to the new store in the mall, assuming normal distribution of the spending amounts, is:

$\$50\pm\$11.08$

5 0

3 days ago

: Xem xét 2 nhà đầu tư A và B với đường cầu về cổ phiếu như sau: Nhà đầu tư A: 2P = 300 – 2Q Nhà đầu tư B: P = 150 – 3Q a. Tại m

Zina [9171]

Đáp án:

Giải thích từng bước:

5 0

15 days ago