Anya calls Zara once each evening before she goes to bed. She calls Zaras mobile phone with

Question:

Anya calls Zara once each evening before she goes to bed. She calls Zara’s mobile phone with probability 0.8 or her landline. The probability that Zara answers her mobile phone is 0.74, and the probability that she answers her landline is y. This information is displayed in the tree diagram shown.

a. Given that Zara answers 68% of Anya’s calls, find the value of y.

b. Given that Anya’s call is not answered, find the probability that it is made to Zara’s landline.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

See More Books

Question Posted: Sep 13, 2021 01:31 AM

See More Questions

When ShorTech introduced its Quadrant mobile phone, it had few competitors and so it set a price of $500 when its unit cost was $350. The economics consulting firm it hired to estimate the demand...
A mobile phone service provider randomly samples customers each year to measure current satisfaction with the service provided. The following table summarizes a portion of the survey, with 100...
A thermal storage is made with a rock (granite) bed of 2 m3 which is heated to 400 K using solar energy. A heat engine receives a QH from the bed and rejects heat to the ambient at 290 K. The rock...
The dehydration butanol of alumina is carried out over a silica-alumina catalyst at 680K. CH3CH2CH2CH20H------->cat CH3CH=CHCH3 + H2O The rate law is -r Bu = KPBU/(1+KBuPBul with k= 0.054...
It takes 4.667 mL of 0.0997 M HNO3 to dissolve some solid Cu. What mass of Cu can be dissolved? Cu + 4HNO3(aq) ( Cu(NO3)2(aq) + 2NO2 + 2H2O
Explain the concept of interest rate parity. Provide the rationale for its possible existence.
Pallos Company is purchasing the net assets of Shrilly Company. The book and fair values of Shrillys accounts are as follows: Accounts Book Fair Current assets . . . . . . . . . . . . . . . . . . . ....
Nashville Publishing Company pays its employees monthly. Payments made by the company on October 31, 2019, follow. Cumulative amounts paid to the persons named prior to October 31 are also given. 1....
Which of the following statements is correct a. Product costs are only expensed when products are sold b. All costs must be expensed when products are sold c. All costs must be expensed when products...
Schwenn Products, a bicycle manufacturer, uses "normal volume" as the basis for setting prices. That is, it sets prices on the basis of long-term volume predictions and then adjusts them only for...
A and B are independent events. If P(A) = 0.45 and P(B)=0.64, find P[(A B)'].
A coin is biased such that the probability that three tosses all result in heads is 125/512. Find the probability of obtaining no heads with three tosses of the coin.
For each blank select one entry from the corresponding column of choices. Fill all blanks in the way that best completes the text. As part of Marina Abramovis groundbreaking exhibition at the Museum...
Menlo Company distributes a single product. The companys sales and expenses for last month follow: Total Per Unit Sales $ 308,000 $ 20 Variable expenses 215,600 14 Contribution margin 92,400 $ 6...
Dr. Solo is preparing a single journal entry for December 31, 2022. The bank statement shows a balance of $10,500 on that day. Three checks were made out on that day: one for $250 for medical...
Predicting Gender A study addressed the issue of whether pregnant women can correctly predict the gender of their baby. Among 104 pregnant women, 57 correctly predicted the gender of their baby...
Chamberson Medical Center is comparing their cash flow statements for 2022 to 2021. On the following cash flow form, what would be the cash and cash equivalents for the beginning of the year for...
What concept is important for effective planning and can be seen in various fields, including business and politics?
Table 23.2 shows call options on Amazon stock with the same exercise date in July 2018 and with exercise prices $1,200, $1,300, and $1,400. Notice that the price of the middle call option (with...
1. Using the information from Problem 16-4B, prepare a statement of cash flows for Lim Garden Supplies Inc. using the direct method of presenting cash flows from operating activities. 2. How does Lim...
The first four terms, in ascending powers of x, in the expansion of (1 + ax + bx 2 ) 7 are 1 14x + 91x 2 + px 3 . Find the values of a, b and p.
The function f is such that f(x) = 2 sin 2 x 3cos 2 x for 0 x . i. Express f(x) in the form a + b cos 2 x, stating the values of a and b. ii. State the greatest and least values of f(x). iii....
a. Given that find the value of p and the value of q. b. Hence, without using a calculator, find the exact value of X X + x = ( - x ) - ( + x )
The Work in Process inventory account of a manufacturing company shows a balance of $2,400 at the end of an accounting period. The job cost sheets of the two uncompleted jobs show charges of $400 and...
1. An investor buys a three-year bond with a 5% coupon rate paid annually. The bond, with a yield-tomaturity of 3%, is purchased at a price of 105.657223 per 100 of par value. Assuming a 5bp change...
Describe how the following affect the valuation of PPE. a) Cash Discounts b) Deferred Payment Contracts

Anya calls Zara once each evening before she goes to bed. She calls Zaras mobile phone with

Question:

0.74 Answers Calls mobile 0.8 Does not answer Answers Calls landline Does not ansvw wer versty Pro emyplt

Step by Step Answer:

a Probabilitycalls answered of phone 07408 0592 Probabilitycalls answered of landline 02y 02y Now fi...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

Students also viewed these Mathematics questions