You buy a bag of gummy bears for $5 and four packs of gum. You spent a total of $17. How much did each pack of gum cost?
2 answers:
You might be interested in
Hola!
x = 7 , x = -7
Explicación:
Comienza restando 15 en cada lado:
Usted obtiene:
Ahora divide ambos lados por 2:
Usted obtiene:
Como la ecuación está al cuadrado, tendrás que hacer:
que te da:
Entonces:
Answer:
The customer can conclude that the company's claim is correct
Step-by-step explanation:
The percentage of lids that has a free yogurt coupon = 20%
The number of cups a loyal customer purchases = 85 yogurt cups
The number of cups that contained a coupon = 12 (14.1%)
The confidence interval performed = 99% confidence interval for the proportion of yogurt cups containing coupon codes
The interval obtained = (0.044, 0.238)
Therefore, the range of proportion within which the true proportion exists is 0.044 < < 0.238
The range of percentage within which the true percentage exist is therefore;
0.044 × 100 = 4.4% < × 100 < 0.238 × 100 = 23.8%
Given that the possible true percentage of lids that has a coupon is between 4.4% and 23.8% at 99% confidence level, the customer can conclude that only 12 of his yogurt cup contained coupon by chance and that the company's claim is correct.