Given that S<span>am's distribution of meal costs has a mean of $9 and a standard deviation of $3, this means that the range of Sam's meal cost that are within one standard deviation is given by ($9 - 3, $9 + 3) = ($6, $12).
Given that Sam </span><span>always tips the server $2 plus 10% of the cost of the meal, this means that when the cost of the meal is $9, Sam tips $2 + (0.1 x 9) = $2 + $0.9 = $2.90
Therefore, the mean of the distribution of Sam's tips is $2.90
Similarly, the </span><span>range of Sam's tips that are within one standard deviation is given by ($2 + 0.1(6), $2 + 0.1(12)) = ($2 + 0.6, $2 + 1.2) = ($2.6, 3.2) = ($2.9 - $0.3, $2.9 + $0.3)
Therefore, </span><span>the standard deviation of the distribution of Sam's tips is $0.3</span>
Answer:
El 40% de los estudiantes reprobaron la asignatura.
Step-by-step explanation:
Dado que sabes el número total de estudiantes y cuántos aprobaron la asignatura, puedes restar el número de estudiantes que aprobaron del total de estudiantes para encontrar los estudiantes que reprobaron la asignatura:
50-30=20
Ahora puedes calcular el porcentaje dividiendo el número de estudiantes que reprobaron entre el total de estudiantes y multiplicando el resultado por 100:
20/50*100=40%
De acuerdo a esto, la respuesta es que el 40% de los estudiantes reprobaron la asignatura.
Its a.
Lol taking forever to do stuff is fun.
Answer:
B. $79.45
Step-by-step explanation:
The equation for simple interest is I = PRT, where I = interest earned, P = principal/amount invested, R = rate as a decimal, and T = time in years.
For this example, we'll calculate the interest earned, then add to the principal to get the total amount of money in her account.
I = (70)(0.045)(3)
I = 9.45
70 + 9.45 = $79.45
Please let me know if you have questions.
Answer:
yes
'Weather' and 'climate' are used interchangeably.
Step-by-step explanation:
"Climate" describes the average atmospheric conditions over many years
the average annual rainfall, the predominant wind direction, or the season in which rain is likely to occur can be said as Weather
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hope it helps u</em></u></h2><h2><u><em>
if it does so please mark me as brainiest </em></u></h2>
