Final answer:
Guaranteed income is not a common success feature of a centrally planned economy (CPE), as it often guarantees jobs and strives for increased output but not income levels. The standard of living in a CPE may not match GDP growth, especially if it does not reflect improvements in the variety of goods and healthcare outcomes like infant mortality.
Step-by-step explanation:
All of the following are successes of a centrally planned economy (CPE) except a guaranteed income. In a CPE, while the state often guarantees jobs and strives for increased output, income is typically not guaranteed and can vary depending on the state's valuation of different occupations. A higher standard of living may not be a direct result of CPE's economic structure, as it is influenced by a combination of factors, including access to a variety of goods and services, healthcare quality, and societal well-being measures such as infant mortality rates. A rise in GDP could understate the rise in the standard of living if it does not account for improvements like a greater variety of consumer goods or a decline in infant mortality, which broadly improve the standard of living but do not directly impact GDP figures.